(8) CHAPTER. To clean the teeth with Siwak on Friday.
Narrated Abu Huraira: Allah's Apostle said, If I had not found it hard for my followers or the people, I would have ordered them to clean their teeth with Siwak for every prayer.
Narrated Anas: Allah's Apostle said, I have told you repeatedly to use the Siwak. (The Prophet put emphasis on the use of the Siwak.)
Narrated Hudhaifa: When the Prophet (p.b.u.h) got up at night (for the night prayer), he used to clean his mouth .