al-Hakam bin Aban الحكم بن أبان العدني · The Book of Divorce

"Barirah made a contract that she would be freed in return for nine Awaq, one Uqiyyah to be paid each year." She came to 'Aishah asking for help and she said: "No, not unless they agree to accept the sum in one payment, and that the Wala' will go to me." Barirah went and spoke to her masters but they insisted that the Wala' should be for them. She came to 'Aishah and the Messenger of Allah came, and she…

"The husband of Barirah was a slave."

"Al-Wala' is to the one who did the favor (of setting the slave free)." The Messenger of Allah gave her the choice, as her husband was a slave. And she gave some meat to 'Aishah as a gift, and the Messenger of Allah said: "Why don't you give me some of this meat?" 'Aishah said: "It was given in charity to Barirah." He said: "It is a charity for her, and a gift for us."