Musnad Ahmad 1153:2348

Husayn ibn Muhammad narrated to us, Shayban narrated to us, from Mansur, and Abu Sa’id said: Za’idah narrated to us, Mansur narrated to us, from Ibrahim, from al-Aswad, from ‘Aishah, who said: The family of Muhammad did not eat their fill of food for three consecutive days since they arrived in Medina, until he passed away. Abu Sa’id said: Three consecutive nights of wheat bread, until he passed away.