It was narrated that Muhajir bin Qunfudh bin (Umair) bin Jud'an said: 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.
It was narrated that Abu Hurairah said: 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.
It was narrated from Jabir bin `Abdullah that: A man passed by the Prophet while he was urinating, and greeted him by the Salam. The Messenger of Allah said to him: If you see me in this situation, do not greet me with the Salam, for if you do that I will not respond to you.'
It was narrated that Ibn 'Umar said: A man passed by the Prophet while he was urinating and greeted him with the Salam, and he did not return the greeting.
It was narrated that 'Aishah said: I never saw the Messenger of Allah come out of the toilet without first (cleansing himself) with water.
Abu Sufyan said: Abu Ayyub Al-Ansari, Jabir bin 'Abdullah, and Anas bin Malik told me that when this Verse: In it (the mosque) are men who love to clean and to purify themselves. And Allah loves those who make themselves clean and pure. was revealed, the Messenger of Allah said: 'O Ansar! Allah has praised you for your cleanliness. What is the nature of your cleanliness?' They said: 'We perform ablution for prayer and we take bath to cleanse ourselves of impurity due to sexual activity, and we clean ourselves with water (after urinating). He said: 'This is what it is. So adhere to it.'
It was narrated from 'Aishah that: The Prophet used to wash his private parts three times. Ibn 'Umar said: We did that and we found it to be healing and a means of purification.
It was narrated that Abu Hurairah said: The Messenger of Allah said: 'The (following) was revealed about the people of Quba': 'In it (the mosque) are men who love to clean and purify themselves. And Allah loves those who make themselves clean and pure.' He said: 'They used to clean themselves with water (after urinating), and this Verse was revealed concerning them.'