Musnad Ahmad 79:1

Ya'qub narrated to us, he said: My father narrated to me, from Ibn Ishaq, he said: Abdullah ibn Amr ibn Damrah al-Fazari narrated to me, from Abdullah ibn Abi Sulayt, from his father, Abi Sulayt, he said: "The prohibition of the Messenger of Allah, peace and blessings of Allah be upon him, regarding the eating of the meat of domesticated donkeys came to us while the pots were boiling with it, so we overturned them onto their faces." Abdullah ibn Muhammad ibn Abi Shaybah narrated to us, Abdullah said: And I heard from Ibn Abi Shaybah, he said: Abdullah ibn Numayr narrated to us, from Muhammad ibn Ishaq, from Ubaydullah ibn Amr ibn Damrah al-Fazari, from Abdullah ibn Abi Sulayt, from his father, Abi Sulayt—and he was a Badrī (a veteran of the Battle of Badr)—he said: "The prohibition of the Messenger of Allah, peace and blessings of Allah be upon him, regarding the meat of donkeys came to us while we were at Khaybar, so we overturned them, even though we were hungry."