Amir al-Sha'bi عامر الشعبي · The Book of Purification and its Sunnah

"The Messenger of Allah said: 'Adhere to righteousness even though you will not be able to do all acts of virtue. Know that the best of your deeds is Salat (prayer) and that no one maintains his ablution except a believer.'"

"The Messenger of Allah said: 'Ten things are connected to the Fitrah: trimming the mustache, letting the beard grow, using the tooth stick, rinsing out the nostrils with water, clipping the nails, washing the joints, plucking the armpit hairs, shaving the pubic hairs, washing the private parts with water.'"(One of the narrators) Zakariyya said: "Mus'ab said: 'I have forgotten the tenth thing, but it may have been rinsing out the mouth.'"

"We were given a time limit with regard to trimming the mustache, shaving the pubic hairs, plucking the armpit hairs and clipping the nails. We were not to leave that for more than forty days."

The Prophet relieved himself, then he cleaned himself (with water) from a pot made of brass, then he wiped his hand on the ground. Another chain with similar wording.

"The Messenger of Allah said: 'If a dog licks the vessel of anyone of you, let him wash it seven times.'"