Sahih Bukhari 242

Narrated Abu Hazim: Sahl bin Sa`d As-Sa`idi, was asked by the people, With what was the wound of the Prophet treated? Sahl replied, None remains among the people living who knows that better than I. `Ali [??] used to bring water in his shield..

Narrated Abu Burda: My father said, I came to the Prophet and saw him carrying a Siwak in his hand and cleansing his teeth, saying, 'U' U', as if he was retching while the Siwak was in his mouth. ..

Narrated Hudhaifa: Whenever the Prophet got up at night, he used to clean his mouth with Siwak. ..

Narrated Ibn 'Umar: The Prophet (saws) said, I dreamt that I was cleaning my teeth with a Siwak and two persons came to me. One of them was older than the other and I gave the Siwak to the younger. I was told that I should give it to the older..

Narrated Al-Bara 'bin `Azib: The Prophet said to me, Whenever you go to bed perform ablution like that for the prayer, lie or your right side and say, Allahumma aslamtu wajhi ilaika, wa fauwadtu `Amri ilaika, wa alja'tu Zahri ilaika raghbatan..