Musnad Ahmad 30:1548

Yahya ibn Ishaq narrated to us, Ibn Lahi'ah narrated to us, from Abu al-Aswad, from Abu al-Halbas, from Abu Hurayrah, who said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "The deprived one is he who is deprived of the spoils of a dog."