Musannaf Ibn Abi Shayba 28:679

Waki’ narrated to us, he said: Hisham bin Sa’d narrated to us, from Muhammad bin Zayd bin Muhajir bin Qunfudh, from ‘Umayr, the freed slave of Abu al-Lahm, who said: I witnessed [a battle] with my master, Jubayr, while I was a slave. He did not allot me anything from the spoils of war, but he gave me a sword from the discarded goods, which I would drag along when I girded it.