Sahih Muslim | Book 43 | Hadith Number 7161

Narrated by Hisham
Hisham reported on the authority of his father that 'Aisha said in connection with His (Allah's) words: "And whoever is poor let him take reasonably (out of it)" that it was revealed in connection with the custodian of the property of an orphan, who is in charge of her and looks after her; In case he is poor, he is allowed to eat out of that.