And Muhammad ibn Hatim narrated to me, Yahya ibn Sa'id al-Qattan narrated to us, from Muhammad ibn Yusuf, who said: I heard al-Sa'ib ibn Yazid narrating from Rafi' ibn Khadij, who said: I heard the Prophet, peace be upon him, say: "The worst earnings are the dowry of a prostitute, the price of a dog, and the earnings of a cupper."