Musannaf Ibn Abi Shayba 1:525

Waki’ narrated to us, he said: Sufyan narrated to us, he said: Abu ‘Awn narrated to us, from ‘Abdullah ibn Shaddad, he said: I heard Abu Hurayrah narrating to Marwan, he said: Perform ablution from what fire has touched. So Marwan sent to Umm Salamah and asked her. She said: The Messenger of Allah (may Allah bless him and grant him peace) ate a shoulder [of meat] with me, then he went out to the prayer and did not touch water.