Sahih Bukhari
Gifts
Volume: 003 / Book Number: 047 / Hadith Number: 759
Narrated An-Nu'man bin Bashir:
that his father took him to Allah's Apostle and said, "I have given this son of mine a slave." The Prophet asked, "Have you given all your sons the like?" He replied in the negative. The Prophet said, "Take back your gift then."