Musnad Abu Ya'la al-Mawsili 149:29

Mus'ab ibn 'Abd Allah narrated to us, he said: Ibn al-Darawardi narrated to me, from Hisham ibn 'Urwah, from 'Urwah, from 'Aishah, who said: The Messenger of Allah (ﷺ) said: "Eat and drink until Bilal gives the adhan."