Musannaf Ibn Abi Shayba 19:461

Abu Bakr narrated to us, he said: Yazid ibn Harun narrated to us, from Hisham, from al-Hasan, he said: If he has a share in the *fay’* (spoils/public treasury), he is excused and it is established for him. And likewise regarding a slave girl between him and two men.