Musannaf Ibn Abi Shayba 36:459

Ubayd Allah ibn Musa narrated to us, he said: Musa informed us, from his brother Abdullah ibn Ubaydah, that a group from Hawazin came after the battle and said: "O Messenger of Allah, we desire [to return to] the Messenger of Allah." He said: "In what do you desire that? In lineage or in wealth?" They said: "Rather, in lineage, mothers, and daughters. As for wealth, Allah will provide for us." He said: "As for me, I return what is in my hand and the hands of the Banu Hashim of your captives. As for the people, I will intercede for you to them when I have prayed, if Allah wills. So stand up and say such and such." He taught them what to say, and they did what he commanded them to do. He interceded for them, and no one among the Muslims met them except that he returned what was in his hands of their captives, except for al-Aqra ibn Habis and Uyaynah ibn Hisn, who held onto two women who were in their hands.