Sources of Islamic Law
LIAQAT ALI KHOSO
Additional District and Sessions Judge, Khairpur
00923337120634
[email protected]
https://orcid.org/0009-0008-9814-9327
Abstract
Islamic law reaches the ordinary courtroom in Pakistan far more often than its formal, constitutional presence might suggest — in questions of inheritance, dower, maintenance, divorce, and in the interpretive shadow that the Objectives Resolution and Article 227 of the Constitution cast over legislation generally. Yet the doctrinal architecture that produces a given rule of Islamic law — which source generated it, and according to which school it is being applied — is rarely set out for the working judicial officer in one place. This article sets out, in order, the four primary sources of Islamic law recognized across the juristic tradition 1) the Qur'an, 2) the Sunnah, 3)Ijma and 4) Qiyas; followed by the principal secondary or subsidiary sources through which jurists have extended the law to unprecedented facts, and concludes with a comparative account of the major schools of juristic thought, Sunni and Shia, whose differing methodologies explain why two equally orthodox jurists can reach different answers to the same question. A final section considers how Pakistani constitutional and statutory law has formally absorbed this architecture, including its express recognition that a litigant's own sect may determine which version of Islamic law governs his case.
Keywords: Islamic Law, Quran, Hadith, Sunnah, Ijma, Qiyas, Sunni, Shia.
Introduction: Shari'ah and Fiqh (الشریعۃ، الفقہ )
Two Arabic terms are indispensable to this subject and are frequently, and incorrectly, used as synonyms. Shari'ah refers to the totality of divine guidance as revealed in the Qur'an and exemplified in the practice of the Prophet Muhammad (peace be upon him) . Shariah is in principle, fixed, comprehensive and beyond human amendment. Fiqh, by contrast, is the human, juristic endeavour to understand and articulate specific legal rules from that guidance; it is the product of scholarly reasoning (ijtihad) applied to revealed text, and it is, by its very nature, plural, reasoned, and open to legitimate disagreement among qualified jurists. What is commonly called ‘Islamic law’ in a courtroom context is, almost without exception, fiqh. Fiqah is a jurist's or a school's considered application of the sources to a particular question; rather than Shari'ah directly. This distinction matters practically: it explains why Sunni and Shia jurists, and indeed jurists within the same tradition, can differ on matters of inheritance, divorce or evidence while each claims fidelity to the same revealed sources. The purpose of this article is to set out those sources, in the order of their authority, and then to explain how differing methodologies in weighing them produced the distinct schools (madhahib مذاھب الفقھیہ) that continue to govern the personal law of Muslims in Pakistan and elsewhere today.
1-The Primary Sources of Islamic Law
Classical usul al-fiqh (the science of the sources and methodology of Islamic law) identifies four sources on whose authority, in principle, all schools of Sunni jurisprudence agree, even where they differ sharply on how each is to be interpreted and applied.
A. The Qur'an القرآن:
The Qur'an is the first and paramount source, regarded by Muslims as the literal, unaltered word of Allah (SWT) revealed to the Prophet Muhammadﷺ over approximately twenty-three years (in Makkah and Madina Al Munawwarah). Of its more than six thousand verses, jurists traditionally count somewhere between five and six hundred as ayat al-ahkam آیاۃ الاحکام— verses bearing directly on legal rules, covering worship عبادات, family law, commercial dealings, criminal sanctions جنایات and constitutional principles of governance. The remainder of the text is doctrinal, historical, ethical or eschatological, and informs law only indirectly, through the general values and objectives it establishes. Even among the legal verses, only a minority state a rule in unambiguous, self-executing terms (nass qat'iالنص القطعی ); a great many are open to more than one linguistically sound reading (zanni ظنی ), and it is precisely this interpretive space that gave rise to the juristic disciplines, and eventually the differing schools, discussed below.
B. The Sunnah السنۃ
The Sunnah, the sayings (qawli القولی ), actions (fi'li الفعلی ) and tacit approvals (taqriri التقریری ) of the Prophet ﷺ, ranks immediately after the Qur'an and serves two distinct functions: it explains and elaborates the Qur'an's general injunctions (for instance, prescribing the manner of prayer only outlined in the text), and it independently establishes rules on matters the Qur'an does not address at all. Because the Sunnah was transmitted orally for generations before being systematically compiled, its authenticity is established through the science of hadith criticism, which grades each report by the reliability of its chain of narrators (isnad الاسناد) as sound (sahih الصحیح ), fair (hasan الحسن ), or weak (da'if الضعیف ), and only the first two categories are, in principle, fit to found a legal ruling. Sunni jurists rely principally on the six canonical hadith collections (al-Sihah al-Sittah الصحاح الستۃ ), foremost among them the collections of Imam Bukhari and Imam Muslim, while Shia jurists rely on their own four canonical collections (al-Kutub al-Arba'a), compiled by al-Kulayni, Ibn Babawayh and al-Tusi, which additionally record the reported teachings of the Shia Imams as an extension of prophetic authority. This divergence in which body of transmitted reports is treated as authoritative is itself one of the earliest and most consequential sources of difference between the Sunni and Shia legal traditions.
C. Ijma (Consensus) الاجماع
Ijma is the consensus of qualified jurists (Al-mujtahidun المجتھدون ) of a given generation on a specific legal question, reached after the Prophet's death. Its authority rests on the theological premise, drawn from Qur'anic and prophetic texts on the reliability of the wider Muslim community, that the collective judgment of the qualified scholars of an age will not agree in error. Jurists distinguish explicit consensus (ijma sarih الاجماع الصریح), where jurists openly state and agree upon a ruling, from tacit consensus (ijma sukuti الجماع السکوتی), inferred from the absence of recorded juristic objection to a ruling openly propagated in a given era — the latter being considerably more contested as a source, since silence is a weak basis from which to infer agreement. In practice, genuine, verifiable consensus across the whole scholarly community became increasingly difficult to establish once Islamic scholarship spread across a vast and diverse geography, and much of what is loosely termed ijma in later legal literature refers, more modestly, to consensus within a particular school or region.
D. Qiyas (Analogical Reasoning) القیاس
Qiyas is the extension of an existing textual ruling to a new, unprecedented case that shares the same underlying effective cause ('illah العلۃ ) as the original case. Its structure requires four elements: the original case addressed by text (asl الاصل), the new case requiring a ruling (far' الفرع ), the established ruling attached to the original case (hukm al-asl), and the common effective cause linking the two ('illah العلۃ ). The classical illustration is the Qur'anic prohibition of wine (khamr الخمر ) on account of its intoxicating effect; by qiyas, jurists extended the same prohibition to other intoxicants not named in the text, on the ground that they share the same 'illah of intoxication. Qiyas is the most systematically ‘rational’ of the four primary sources, and the degree of confidence individual schools place in it, wide and confident in the Hanafi tradition, narrower and more cautious in the Hanbali and Zahiri traditions, is itself one of the principal axes along which the schools of thought, discussed in Part IV below, diverge.
2-Secondary and Subsidiary Sources
Beyond the four sources on which there is broad juristic agreement, individual schools developed additional interpretive tools to extend the law to situations the primary sources did not squarely address, or to prevent a rigid application of analogy from producing an unjust or impractical result. These tools are not uniformly accepted; their relative weight is precisely what distinguishes one school's methodology from another's.
Istihsan (Juristic Preference) الاستحسان. A departure from the strict result of analogy in favour of a more equitable or practically sound ruling, justified by a stronger, competing legal consideration. Associated most closely with the Hanafi school, istihsan is often described as choosing the ruling that better serves the underlying purpose of the law even where formal analogy would point elsewhere, and has attracted criticism from other schools (most sharply the Shafi'i and Zahiri traditions) as an invitation to subjective preference dressed in legal language, a criticism Hanafi jurists answer by insisting that istihsan is itself a disciplined, textually anchored method of reasoning, not unguided discretion.
Istislah / Maslaha Mursalah (Unregulated Public Interest) [الاستسلاح، المصلحۃ المرسلۃ]. The recognition of a ruling grounded in a public interest that the primary texts neither expressly endorse nor expressly forbid, but which serves the broader objectives of the Shari'ah (maqasid al-shari'ah) — the protection of religion, life, intellect, lineage and property. Developed most extensively within the Maliki school, maslaha mursalah has proved historically significant for legislation on matters the classical texts could not have anticipated in detail, such as codified traffic regulation, public health measures, and modern commercial regulation, provided the interest served is genuine, general, and not itself repugnant to an express text.
Istishab (Presumption of Continuity) الاستصحاب. The presumption that a previously established state of fact or law continues to hold until proven otherwise,e for instance, presuming a missing person to be alive, or an existing marriage to subsist, until credible evidence establishes the contrary. This is less a source of new rules than an evidentiary and procedural default that operates whenever the other sources are silent on whether a given state of affairs has changed.
'Urf (Custom) العُرف. Local custom or usage, recognised as a subsidiary source provided it does not contradict an express text, is not confined to a particular locality in a way that undermines legal certainty, and was already established at the relevant time. 'Urf explains much of the local variation historically found within Islamic commercial and family practice across different regions, since jurists across the schools accepted that settled, reasonable custom could inform matters, particularly contractual terms and commercial dealings, that the primary texts left to be filled by the practice of the community.
Sadd al-Dhara'i (Blocking the Means) سد الذرائع. The principle that an act otherwise permissible may be prohibited where it is highly likely to serve as a gateway to a prohibited end. Prominent in Maliki and Hanbali reasoning, it operates preventively, not because the act itself is wrongful, but because permitting it would, in practice, facilitate wrongdoing that the law is concerned to prevent.
Qawl al-Sahabi (The Opinion of a Companion) قول الصحابیand Shar' man Qablana (Laws of Earlier Communities) شرع من قبلہُ . Two further, more limited sources: the recorded legal opinion of a Companion of the Prophet, given particular weight where it concerns a matter on which the Companion was well placed to have direct knowledge of the Prophet's practice and no contrary evidence exists; and the law revealed to earlier prophets and communities, accepted as continuing to bind Muslims only to the extent it is affirmed, rather than abrogated, by the Qur'an and Sunnah. Both sources are invoked more sparingly, and their authority is more contested, than any of the six discussed above.
Running through all of these subsidiary sources is the overarching interpretive framework of maqasid al-shari'ah, the theory, most systematically developed by the Andalusian الاندلسیۃ jurist Abu Ishaq al-Shatibi, that the entire body of revealed law is oriented toward five higher objectives: 1. the preservation of religion, 2. life, 3. intellect, 4.lineage and 5. property. Maqasid is not itself a discrete source in the way Qiyas or Istihsan is; rather, it functions as the lens through which jurists across the schools test whether a proposed application of a subsidiary source genuinely serves the purposes the Shari'ah was revealed to secure, or merely serves convenience.
3-The Schools of Juristic Thought (Al-Madhahib) المذاھب
Differences in how jurists weighed the sources described above, particularly Qiyas, Istihsan and Maslaha, crystallised over the second and third Islamic centuries into distinct, institutionally continuous schools of legal method. Four Sunni schools survive as living traditions today; a fifth, the Zahiri school, survives chiefly in scholarly literature; and the Shia tradition developed its own schools along a different theological axis, centred on the doctrine of the Imamate.
A. The Hanafi School
Founded on the teaching of Imam Abu Hanifa al-Nu'man (d. 767 CE) in Kufa, Iraq, and systematized by his students particularly Imama Abu Yusuf and Imam Muhammad al-Shaybani, the Hanafi school is distinguished by its comparatively wide and confident use of Qiyas and, especially, Istihsan, reflecting the more heterogeneous, commercially active society of Iraq in which it developed and the relative scarcity, in that environment, of orally transmitted hadith compared to Medina. It is today the largest of the four Sunni schools by number of adherents, historically the school of the Abbasid, Ottoman and Mughal states, and remains the dominant school across South and Central Asia, including Pakistan, where it forms the default personal-law tradition for the majority Sunni population.
B. The Maliki School المذھب المالکی
Founded on the teaching of Imam Malik ibn Anas امام مالک ابن انس (d. 795 CE) in Medina, the city in which the Prophet himself governed and where, Maliki jurists argue, the continuous practice of the community ('amal ahl al-Madina عمل اھل المدینۃ ) preserved an especially reliable record of prophetic practice. The school is particularly associated with Maslaha Mursalah مصلحہ مرسلہand Sadd al-Dhara'i سد الذ رائع , reflecting Imam Malik's emphasis on the underlying welfare purposes of the law alongside strict textual analysis. The Maliki school today predominates across North and West Africa.
C. The Shafi'i School المذھب الشافعی
Founded on the teaching of Imam Muhammad ibn Idris al-Shafi'i محمد ابن ادریس الشافعی(d. 820 CE), a student in different periods of both the Hanafi and Maliki traditions, this school is historically significant as the first to articulate a systematic theory of legal method as such: al-Shafi'i's treatise al-Risala is generally regarded as the founding text of usul al-fiqh اصول الفقہas a discipline in its own right. The Shafi'i school occupies a methodologically intermediate position, more textually cautious than the Hanafi school in its use of Istihsan, which al-Shafi'i famously rejected outright as amounting to legislating according to personal opinion, yet more receptive to Qiyas than the Hanbali school that followed it. It predominates today in Egypt, East Africa, Yemen, and much of Southeast Asia.
D. The Hanbali School المذھب الحنبلی
Founded on the teaching of Imam Ahmad ibn Hanbal (d. 855 CE), the school most closely identified with textual literalism among the four surviving Sunni traditions, relying most heavily on the Qur'an and an unusually broad acceptance of hadith, including reports of comparatively weaker authentication where no stronger text addresses the point, and correspondingly the most restrained of the four in its use of Qiyas. It is the school of Kingdom of Saudi Arabia today and has had significant modern influence through the Salafi and Wahhabi reform movements that trace their methodology, in part, to Hanbali textualism.
E. The Zahiri School المذھب الظاھری
Associated principally with Ibn Hazm of Cordoba ابن حزم قرطبی(d. 1064 CE), the Zahiri (‘literalist’) school rejected Qiyas and Istihsan altogether as illegitimate departures from revealed text, insisting that legal rulings be derived exclusively from the plain (zahir) meaning of the Qur'an, the Sunnah, and explicit consensus. Though it did not survive as an institutionally continuous school of personal law in the way the four Sunni madhahib did, its rigorously textualist method remains an important reference point in comparative usul al-fiqh, and has seen renewed scholarly interest in the modern period.
F. The Shia Schools المذاھب الشیعی
The Shia legal tradition diverges from the Sunni schools not merely in method but at a more fundamental theological level: its adherents hold that legitimate religious and legal authority after the Prophet passed to a designated line of Imams from his family (Ahl al-Bayt اھل البیت ), whose teachings carry an authority comparable to prophetic Sunnah itself. This produces three principal branches, distinguished chiefly by how many Imams they recognize and the scope of the Imam's interpretive authority. The Ja'fari school, named for the sixth Imam, Ja'far al-Sadiq (d. 765 CE), and followed by the Ithna Ashari اثنا عشری(Twelver) Shia, is by far the largest Shia school, predominant in Iran and parts of Iraq, and forms a significant minority tradition within Pakistan; its methodology relies on the Qur'an, the Sunnah as transmitted through the Prophet's family and the Imams, a distinct doctrine of Ijma (understood as consensus that necessarily includes the Imam's position), and 'Aql (independent reason) in place of the Sunni doctrine of Qiyas, which Ja'fari jurists have historically regarded with considerably greater suspicion than their Sunni counterparts. The Zaidi school زیدیۃ , named for Zayd ibn Ali (d. 740 CE), recognizes a shorter line of Imams and is, of the Shia schools, methodologically closest to Sunni jurisprudence, including a greater openness to analogical reasoning; it predominates in Yemen. The Ismaili tradition اسماعیلی, which split from the Twelvers over the succession following the death of Imam Ja'far al-Sadiq's son Isma'il, developed a more esoteric method of interpretation (ta'wil), emphasising the Imam's or Da'i's continuing authority to expound the inner meaning of revealed texts, and today comprises several distinct branches, including the Nizari and Musta'li (Bohra) communities, both of which retain an organized presence in Pakistan and India.
What separates these traditions, in summary, is less a disagreement over the primacy of the Qur'an — on which every school agrees — than a disagreement over which further reports are authoritative, how far human reasoning may supplement revealed text, and, in the Shia case, the additional theological role assigned to the Imamate in transmitting and interpreting the law. None of the differences, properly understood, questions the revealed status of the Qur'an itself; they are differences of fiqh, in the sense explained herein, and it is precisely this framing that allows a plural legal landscape to coexist within a single religious tradition, and within a single modern state, without any school's adherents regarding the others as outside the fold of orthodox practice.
Constitutional and Statutory Recognition in Pakistan
This architecture is not merely of historical or comparative interest to a Pakistani judicial officer; it is written into the Constitution itself. Article 2A gives the Objectives Resolution substantive constitutional status, and Article 227 requires that all existing law be brought into conformity with the Injunctions of Islam as laid down in the Qur'an and Sunnah, barring the enactment of any repugnant law. Crucially for present purposes, the Explanation appended to Article 227(1) does not treat ‘the Qur'an and Sunnah’ as a single, undifferentiated body of rules for purposes of personal law: it expressly provides that, in application to the personal law of any Muslim sect, the expression means the Qur'an and Sunnah as interpreted by that sect. The Constitution, in other words, formally recognizes the very pluralism of fiqh described hereinabove, rather than privileging any single school's reading as the sole constitutional standard for personal-law purposes. The Federal Shariat Court's jurisdiction under Article 203D to test ordinary legislation for repugnancy to the Injunctions of Islam, and the advisory role of the Council of Islamic Ideology under Article 230 in proposing Islamising amendments to existing law, both operate against this same backdrop. The Supreme Court of Pakistan has been careful, however, to confine the practical effect of Article 2A: in Hakim Khan v Government of Pakistan it held that Article 2A, though a substantive part of the Constitution, is not a supra-Constitutional provision capable of being used, by itself, as a direct touchstone to strike down another constitutional provision, apparent conflicts between constitutional provisions are to be resolved through the ordinary, harmonizing canons of constitutional interpretation, not by treating Article 2A as trumping the rest of the text. That holding was reaffirmed the following year in Mst. Kaniz Fatima v Wali Muhammad, and its underlying premise, that Islamic provisions are woven into, rather than placed above, the ordinary constitutional order, was echoed by the Supreme Court in Al-Jehad Trust v Federation of Pakistan.
At the level of ordinary personal-law adjudication, the Muslim Personal Law (Shariat) Application Act, 1962 directs that in matters of succession, marriage, divorce, dower, maintenance, guardianship and similar enumerated subjects, the rule of decision as between Muslim parties is to be Muslim Personal Law (Shariat), displacing any contrary local custom. In practice, and consistently with the Explanation to Article 227, courts applying this Act treat Hanafi fiqh as the general personal law applicable to Muslim litigants, while applying the distinct rules of Ja'fari fiqh — for instance, on matters such as iddat, muta, or particular inheritance shares — once a litigant establishes that he or she is Shia. Identifying the correct school before applying a personal-law rule is not, therefore, an academic nicety; it is a threshold factual and legal determination the trial court must make, ordinarily on the pleadings and any evidence of sectarian affiliation placed on the record, before the substantive personal-law question can be answered correctly.
Conclusion
The sources of Islamic law form a layered structure rather than a flat list: the Qur'an and Sunnah supply the revealed text; Ijma and Qiyas extend and consolidate that text through the disciplined exercise of collective and individual juristic reasoning; and a further set of subsidiary tools — Istihsan, Maslaha, Istishab, 'Urf, Sadd al-Dhara'i and the rest — allow jurists to reach reasoned, principled answers where the primary sources are silent or ambiguous, all tested against the higher objectives the law is meant to serve. The different weight each school assigns to this last layer, more than any disagreement over the first, is what produced the distinct Hanafi, Maliki, Shafi'i, Hanbali, Zahiri, Ja'fari, Zaidi and Ismaili traditions, each internally coherent and each claiming fidelity to the same revealed sources. For the Pakistani judicial officer, this is not merely comparative religious scholarship: it is written into Article 227's own text, which measures repugnancy to Islam by the yardstick of the litigant's own sect, and it surfaces routinely and directly in ordinary personal-law litigation. A working familiarity with which source generates a given rule, and according to which school it is being applied, remains, for that reason, a practical necessity of the trial court's daily work and not merely a subject of academic interest.
References
The Holy Quran.
Constitution of the Islamic Republic of Pakistan, 1973, including Articles 2A, 203D, 227 and 230.
The Muslim Personal Law (Shariat) Application Act, 1962.
Hakim Khan and 3 others v Government of Pakistan, PLD 1992 SC 595.
Mst. Kaniz Fatima v Wali Muhammad and another, PLD 1993 SC 901.
Al-Jehad Trust v Federation of Pakistan, PLD 1996 SC 324.
Al-Shafi'i, Muhammad ibn Idris, Al-Risala (Treatise on the Foundations of Islamic Jurisprudence).
Al-Shatibi, Abu Ishaq, Al-Muwafaqat fi Usul al-Shari'a.
Ibn Hazm, Ali ibn Ahmad, Al-Ihkam fi Usul al-Ahkam.
Kamali, Mohammad Hashim, Principles of Islamic Jurisprudence (Islamic Texts Society).
Coulson, N.J., A History of Islamic Law (Edinburgh University Press).
|