Musnad Abu Ya'la al-Mawsili 147:44

Muhammad ibn al-Sabah narrated to us, Sharik informed us, from Layth, from Abd al-Warith, from Anas, who said: Abu Taybah passed by us during Ramadan, so we said, "Where have you come from?" He said, "I performed cupping for the Messenger of Allah, may Allah bless him and grant him peace."