Musannaf Ibn Abi Shayba 13:1428

Abu Bakr narrated to us, he said: Marwan bin Mu'awiyah narrated to us, from Al-Hasan bin Yazid, from Al-Sha'bi, he said: A woman sent me to him to ask him about orphans who were under her care, whom she was supporting: "May she eat anything from their wealth?" He said: "Yes, in a reasonable manner."