Shu'aib bin Abi Hamza شعيب بن أبي حمزة · The Book of Purification

"I saw the Messenger of Allah (ﷺ) performing Wudu' like I have just done." Then he said: "Whoever performs Wudu' as I have done, then stands and prays two Rak'ahs without letting his thoughts wander, his previous sins will be forgiven.'"

"When he was the governor of Al-Madinah, Marwan mentioned that a man should perform Wudu' after touching his penis, if he touches it iwth his hand. I did not like that and I said: 'The one who touches it does not have to perform Wudu'.' Marwan said: 'Busrah bint Safwan told me that she heard the Messenger of Allah (ﷺ) mention the things for which Wudu' should be performed, and the Messenger of Allah (ﷺ) said: 'Wudu' should be performed…

"The Messenger of Allah (ﷺ) used to pray when I was lying in front of him as the bier is placed (in front of the Imam), and when he wanted to pray Witr he would nudge me with his foot."

It was reported that Jabir (ra) said "That last of the two matters from the Messenger ofAllah (ﷺ) was leaving off ablution from that which had been touched by fire."