Musnad Ahmad 30:3359

Yazid ibn Harun narrated to us, from al-Hajjaj, from ‘Ata’, from Abu Hurayrah, who said: "He forbade the price of a dog, the earnings of a cupper, and the dowry of a prostitute." He said: I said to ‘Ata’, "The Prophet, may Allah bless him and grant him peace?" He said: "Who else, then?"