Musnad Ahmad 472:2

Sa'd narrated to us, my father narrated to me, from Salih, from Ibn Shihab, who said: 'Urwah ibn al-Zubayr informed me that al-Miswar ibn Makhramah informed him that 'Amr ibn 'Awf—who was an ally of the Banu 'Amir ibn Lu'ayy and had witnessed Badr with the Messenger of Allah (peace and blessings of Allah be upon him)—informed him that the Messenger of Allah (peace and blessings of Allah be upon him) sent Abu 'Ubaydah, and he mentioned the like of it.