Musannaf Ibn Abi Shayba 18:451

Abu Bakr narrated to us, he said: Muhammad ibn Bakr narrated to us, from Ibn Jurayj, he said: Ma'mar informed me, from the one who informed him, from 'Ikrimah, that Abu Bakr set the compensation for the nipple of a woman's breast at one hundred dinars. And he set the compensation for the nipple of a man's breast at fifty dinars.