Hameed bin Musa'da bin al-Mubarak حميد بن مسعدة بن المبارك · The Book of Purification

"My father told me: 'I heard 'Aishah say, (narrating) from the Prophet (ﷺ): "Siwak is a means of purification for the mouth and is pleasing to the Lord."

"The Messenger of Allah (ﷺ) said: 'I have indeed urged you with regard to the Siwak.'"

"I saw the Messenger of Allah (ﷺ) trickle water into his hand until it started to drip from his hand, three times."

"I saw 'Ali call for a chair and he sat down, then he called for water in a vessel and washed his hands three times, then he rinsed his mouth and nose with one hand, three times. Then he washed his face three times, and his hands three times. Then he dipped his hand in the vessel and wiped his head, then he washed each foot three times. Then he said: 'Whoever would like to see how the Messenger of…

"The Messenger of Allah (ﷺ) stayed behind, and I stayed with him. When he had relieved himself he said: 'Do you have any water with you?' I brought some water to him, and he washed his hands and face, then he started trying to uncover his arms, but the sleeves of his Jubbah were too tight, so he threw it over his shoulders and washed his arms and wiped over his forehead and 'Imamah, and over his Khuff."

"When any one of you wakes from sleep, let him not put his hand into the vessel until he has washed it three times, because he does not know where his hand spent the night."

It was narrated from 'Aishah that if the Messenger of Allah (ﷺ) wanted to sleep while he was Junub, he would perform Wudu', and if he wanted to eat he would wash his hands.

"While the Messenger of Allah (ﷺ) was in the Masjid, he said: 'O 'Aishah, hand me the garment.' She said: 'I am not praying.' He said: 'It is not in your hand.' So she gave it to him."