Book 31, Hadith 4

It was narrated from Bashir bin Sa'd that he brought An-Nu'man to the Prophet and said:"I want to give this son of mine a slave as a present, and if you think that I should go ahead with it, I will go ahead." The Messenger of Allah said: "Have you given a present to all your children?" He said: "No." He said: "Then take (your present) back