Musannaf Ibn Abi Shayba 36:336

Waki’ narrated to us, he said: Sufyan narrated to us, from Yazid ibn Yazid ibn Jabir, from Makhul, from Zayd ibn Jariyah, from Habib ibn Maslamah, that the Prophet (peace and blessings of Allah be upon him) would grant the third after the fifth [as extra spoils of war].