Isḥāq ibn Ibrāhīm narrated to us: al-Walīd ibn Muslim informed us, from al-Awzāʿī, from Yaḥyā ibn Abī Kathīr: Ibrāhīm ibn Qāriẓ narrated to me, from al-Sāʾib ibn Yazīd: Rāfiʿ ibn Khadīj narrated to me, from the Messenger of Allah, peace and blessings be upon him, who said: "The price of a dog is impure, the earnings of a prostitute are impure, and the wages of a cupper are impure."