Sharayk bin 'Abdullah شريك بن عبد الله النخعي · The Book of Purification and its Sunnah

"The Messenger of Allah used to perform ablution with a Mudd (of water) and bath with a Sa'."

"The Messenger of Allah said: 'The screen between the Jinn and the nakedness of the sons of Adam is that when a person enters the Kanif, he should say: Bismillah (in the name of Allah).'"

"Whenever the Messenger of Allah entered the toilet, he would say: 'A'udhu Billahi minal-khubthi wa'l-khaba'ith (I seek refuge with Allah from male and female devils).'"

"A man passed by the Prophet while he was urinating, and greeted him with the Salam, but he did not return the greeting. While he finished, he struck the ground with his palms and did dry ablution (Tayammum), then he returned the greeting."

The Messenger of Allah called for water and performed ablution once. He said: "This is the minimum requirement of ablution' or he said: 'The ablution of one who, if he does not perform this ablution, Allah will not accept his prayer." Then he performed ablution washing each part twice, and he said: 'This is the ablution of one who, if he performs it, Allah will give him two shares of reward." Then he performed ablution washing each part three times,…

When they did dry ablution with the Messenger of Allah, he commanded the Muslims to strike the dust with the palms of their hands, and they did not pick up any dust. Then they wiped their faces once, then they struck the dust with their palms once again and wiped their hands.

The Prophet went around to all of his wives in one night, and he had a bath after each one of them. It was said to him: "O Messenger of Allah, why not make it one bath?" He said: "This is purer, better and cleaner."

"If a man had intercourse with his wife while she was menstruating, the Prophet commanded him to give half a Dinar in charity."

The Prophet entered upon her, and a freed slave girl of hers concealed herself. The Prophet asked: "Have her periods begun?" She said: "Yes." He tore a piece of his turban and said: "Cover your head with this."