(8) باب السِّوَاكِ يَوْمَ الْجُمُعَةِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) 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."
Reference: Sahih al-Bukhari 887
In-book reference: Book 11, Hadith 12
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 13, Hadith 12