Musannaf Ibn Abi Shaybah

Hazrat Yahya bin Saeed (may Allah have mercy on him) narrates that Hazrat Umar bin Abdul Aziz (may Allah have mercy on him) said: A man's umm walad from among the Muslims became an apostate. So that man sold her at the place of Dumah al-Jandal to a person of a religion different from hers.