The Messenger of Allah (ﷺ) went to the privy and when he came back, he was presented with food. It was said to him; Messenger of Allah, wouldn't you perform ablution. He said: Why, am I to say prayer?
Sahih Muslim Book 3, Hadith 150
← Previous Hadith We were with the Messenger of Allah (ﷺ) and he had come out of the privy. Food was presented to him. It was said to him (by the Companions around him): Wouldn't you perform ablution? Upon this he said: Why, am I to say prayer that I should perform ablution?

Sahih Muslim Book 3, Hadith 149 Next Hadith → The Apostle of Allah (ﷺ) came out of the privy after relieving himself, and food was brought to him and he took it, and did not touch water. In another narration transmitted by Sa'id b. al-Huwairith it is like this: It was said to the Messenger of Allah (ﷺ) You have not performed ablution. He said: I do not intend to say prayer that I should perform ablution.

Sahih Muslim Book 3, Hadith 151