Musnad Abu Ya'la al-Mawsili 122:4

Abu Khaythama narrated to us, Ibn ‘Uyaynah narrated to us, from Mus‘ab, who heard it from Anas, who said: I saw the Prophet (peace and blessings of Allah be upon him) eating while sitting on his haunches, eating quickly, and he was dividing it and sending me with it. I think he means dates.