Musannaf Ibn Abi Shaybah 35711 — A slave who fights on his master's

Ibrahim (may Allah have mercy on him) said: If a slave fights on his master's horse, then when the spoils are divided among the Muslims, a portion is allotted for his master's horse just as it is allotted for the horses of the Muslims, and the slave is also given a share just as any one of the Muslims receives.