Sunan An-Nasa'i
Hadith #3672
It was narrated from An-Nu'man bin Bashir that his father gave him a slave as a present, then he came to the Prophet to ask him to bear witness (to that). He said:""Have you given a present to all of your children?"" He said: ""No."" He said: ""Then take it back."" This wording is that of (one of the narrators) Muhammad