Hiban bin Hilal حبان بن هلال · The Book of Presents

"Ask the Prophet to bear witness to what you have given to my son." So he came to the Prophet and told him about that, and the Prophet did not want to bear witness to it.

"O Prophet of Allah, I have given An-Nu'man a present." He said: "Have you given something to his brothers?" He said: "No." He said: "Then take it back."

"I have given a gift to my son, so bear witness." He said: "Do you have any other children?" He said: "Yes." He said: "Have you given them something like that which you have given him?" He said: "No." He said: "Shall I bear witness to unfairness?"