Musannaf Ibn Abi Shayba 18:452

Abu Bakr narrated to us, he said: Muhammad ibn Bakr narrated to us, from Ibn Jurayj, he said: Dawud ibn Abi Asim informed me that Abd al-Malik ibn Marwan gave a judgment regarding the killing of Ghassan, and they had struck the women in the breasts, with fifty dinars.