Musnad Ahmad 30:1198

Al-Aswad ibn ‘Amir narrated to us, Abu Bakr informed me, from Hisham, from al-Hasan, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) slaughtered a camel, and the people plundered it. Then his announcer called out: "Indeed, Allah and His Messenger forbid you from plunder." So the people brought what they had taken, and he divided it among them.