Sahih al-Bukhari 285

Ayyash narrated to us, saying: Abd al-Ala narrated to us, saying: Humayd narrated to us, from Bakr, from Abu Rafi, from Abu Hurayrah, who said: The Messenger of Allah (ﷺ) met me while I was in a state of major ritual impurity. He took my hand, and I walked with him until he sat down. I slipped away, went to the baggage, and bathed. Then I returned while he was still sitting. He said: “Where were you, Abu Hirr?” I explained it to him. He said: “Glory be to Allah, Abu Hirr! A believer does not become impure.”