Musnad Ahmad 1153:341

Sufyan narrated to us, from Mis'ar, from al-Miqdam ibn Shurayh, from his father, from Aisha, who said: "The Messenger of Allah (peace and blessings of Allah be upon him) would give me the bone (with meat on it), and I would gnaw the meat off it. Then he would take it and place his mouth on the place where my mouth had been. And he would give me the vessel, and I would drink from it. Then he would take it and place his mouth on the place where my mouth had been."