Chapter 25: The Book of Gifts
Nu' man b. Bashir reported that his father brought him to Allah' s Messenger (ﷺ) and said: I have donated this slave of mine to my son. Allah' s Messenger (ﷺ) said: Have you donated to every one of your sons (a slave) like this? He said: No. Thereupon Allah' s Messenger (may peace he upon him) said: Then take him back.
Sahih Muslim 1623a