Musnad Ahmad 457:26

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from Abu Bakr ibn 'Abd al-Rahman ibn al-Harith ibn Hisham, from Abu Mas'ud, who said: "The Messenger of Allah, may Allah bless him and grant him peace, forbade the price of a dog, the dowry of a prostitute, and the fee of a soothsayer."