Musannaf Ibn Abi Shayba 3:5534

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Hisham ibn ‘Urwah, from his father, from ‘Aishah, she said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When the prayer is attended and the dinner is served, then begin with the dinner."