Sufyan bin 'Uyaynah سفيان بن عيينة · The Book of Purification and its Sunnah

"Adhere to righteousness and it is a blessing if you are able to do so. Know that the best of your deeds is prayer and that no one maintains his ablution except a believer."

"The Prophet went out to urinate, and 'Umar followed him with water. He said: 'What is this, O 'Umar?' He said: 'Water.' He said: 'I have not been commanded to perform ablution every time I urinate. If I did that it would have become a Sunnah.'"

"I came to the Prophet when he was performing ablution and greeted him with the Salam, but he did not return (the greeting). When he had finished his ablution he said: 'Nothing prevented me from returning your greeting but the fact that I need to have ablution.'" (Da'if) Another chain with similar wording.

"The Messenger of Allah and I used to perform ablution from a single vessel, when the cat had drunk from it beforehand."

"The Messenger of Allah said: 'When anyone of oyu gets up from sleep and wants to perform ablution, he should not put his hand into the vessel he used for ablution until he has washed it, because he does not know where his hand spent the night or where he put it.'"

"I saw `Uthman and `Ali performing ablution, washing each part three times, and they said: 'This is how the Messenger of Allah used to perform ablution.'" (Hasan) Another chain with similar wording.

"The Messenger of Allah said: 'The ears are part of the head.'"

'The Messenger of Allah said: 'When you get up for prayer, perform ablution properly and make the water run between your toes and your fingers.'"

When it was the year of the Conquest (of Makkah), the Messenger of Allah got up to perform a bath and Fatimah screened him. Then he took his garment and wrapped himself in it (such that it became like the towel used to dry oneself).

"I heard the Messenger of Allah say: 'Whoever touches his sexual organ, let him perform ablution.'"

"I put out some water for the Prophet to take a bath, and he bathe to cleanse himself from impurity following sexual activity. He tilted the vessel with his left hand, pouring water into his right, and washed his hands three times. Then he pourd water over his private parts, then he rubbed his hands on the ground. Then he rinsed his mouth and nose, and washed his face three times, and his forearms three times. Then he poured water…

Her mother Umm Salamah said: "Umm Sulaim came to the Prophet and asked him about a woman who sees in her dream something like a man sees. He said: 'Yes, if she sees water (discharge), let her take a bath.' I said: 'You have embarrassed the women. Do women experience wet dreams?' The Prophet said: 'May your hands be rubbed with dust, how else does her child resemble her?'"

She asked the Messenger of Allah about a woman who sees in her dream that which a man sees. He said: "She does not have to take a bath unless she has an orgasm, just as man does not have to take a bath unless he has an orgasm."

"I said, O Messenger of Allah! I am a woman with tight braids. Should I undo them when I take a bath to cleanse myself from the state of sexual impurity?" He said: "Rather it is sufficient for you to pour three handfuls of water over yourself, and you will be purified," or he said: "In that case you would have become purified."