Musannaf Ibn Abi Shayba 13:1027

Abu Bakr narrated to us, he said: Muhammad ibn Maysar narrated to us, from Ibn Jurayj, from ‘Ata’, who said: I entered upon Ibn ‘Abbas while a servant of his was cupping him. He said: "O Ibn ‘Abbas, what do you do with the earnings of this [servant]?" He said: "I eat it and I feed it to others," and he gestured with his hand toward his mouth.