Musannaf Ibn Abi Shayba 13:2205

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Ja’far bin ‘Awn narrated to us, from Yahya bin Sa’id, from ‘Abdullah bin Hubayrah regarding His saying: "And their consuming of the *suht* (illicit gain)." He said: The dowry of a prostitute, and what the soothsayers would take for their soothsaying.