Musannaf Ibn Abi Shayba 36:354

Hafs ibn Ghiyath narrated to us, from Burayd ibn Abdullah, from Abu Burdah, from Abu Musa, who said: We arrived to the Messenger of Allah (may Allah bless him and grant him peace) three days after the conquest of Khaybar. He divided [the spoils] for us, and he did not divide for anyone who did not witness the conquest other than us.