Sunan An-Nasa'i

It was narrated from 'Aishah that she bought Barirah from some of the Ansar who stipulated that her Wala' should go to them. The Messenger of Allah said:""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