Muhadith diyaar-e-Yemen shaykh muqbil bin haadi al-wadai (رحمہ اللہ) mutawaffa 1422 hijree year, said:
إن الله سبحانه وتعالى حفظ الدين بأهل السنة؛ فالمعتزلة اشتغلوا بالفلسفة ونبذوا شرع الله، والرافضة كتبهم تشبه كتب اليهود والنصارى ليس لها أسانيد: (وقال عليه السلام، وقال أبوعبد الله عليه السلام)، وإن أسندوا فعن رافضي عن قبوري عن جويهل عن كذاب، أناس مجهولون أسانيدهم مجهولة.
وأهل السنة رجالهم كأنّها النجوم في السماء: شعبة بن الحجاج، سفيان الثوري، محمد بن مسلم الزهري، سعيد بن المسيب.
( تحفة المجيب علی أسئلة الحاضر والغريب : ٣٨٧)
Allaah subhanahu wa ta'lah preserved the religion with the people of Sunnah, mu'tazilah were engaged into philosophy and rejected the law/legislation of Allaah, and the books of rawaafidh is like the books of Jews and Christians which do not have chains (Just he said peace be upon him and abu abdullah alayhe salaam said). If they even bring the chain even its narrated from raafidhi, narrated from grave-worshiper, narrated from johail (could mean ignorant wallahu a'alam), narrated from a liar, unknown people and unknown chains.
The men of Ahlul sunnah are like stars of sky: shu'bah bin al-hajjaaj, sufyaan athawri, muhammad bin muslim az-zuhri, sa'eed bin al-musayyib (رحمہم اللہ)
(ref: tuhfatul mujeeb alaa as'alatul haazir wal-ghareeb: 387)
selected and translated in Urdu by hafith muhammad taahir (حفظہ اللہ)
May Allaah give jaza-e-khayr to our noble brothers (ابن ابی عبد اللہ حافظ عبید الرحمن گوندل) hafithahullah, and (حافظ محمد طاہر) hafithahullah; ameen,
May Allaah give us courage to learn the ilm of deen, with authentic isnaad from the ulamah of ahlul sunnah, some of them of past are mentioned in this statement, Allaahumma ameen.
Autobiography of Muhadith Shaykh Muqbil bin al-wadai rahimahullah from Yemen:
I come from Waadiýah, which is a place to the east of the city of Saýadah from the valley of Dammaaj. My name is Muqbil bin Haadee bin Muqbil bin Qaaýidah al-Hamdaanee al-Waadiýee al-Khallaalee, from the tribe of Aali Raashid. 
All praise due to Allaah, most of the people of Waadiýah, who neighbor Saýadah defend me and the Daýwah. Some of them wish to defend the Religion while others defend their tribal devotion. If it were not for Allaah first, then them, the enemies of the (Salafi) Da'wah, particularly the Sheeýah of Saýadah, would not have left behind any signs or traces of us.
I will mention some examples of them for which I ask Allaah to reward them, one of which was when I faced severe opposition in the Haadee Mosque because I turned people away from the (Shiite) Daýwah there. So some men from Waadiýah and others stood by me to the point that Allaah saved me through their hands. The Shiites desired to rule against me. This was at the time of Ibraaheem Al-Hamdee. And evil people amongst the Communists and Shiites raised their heads and imprisoned me for a period of eleven days during Ramadaan. About fifty of the youth from Waadýiah would come to visit me in prison during some of the nights, while another hundred and fifty of their men would also go to the prison caretakers during these nights, so much so that the caretakers got fed up and released me from jail, all praise be to Allaah.