Narrated An-Nu'man bin Bashir: That his father gave a slave to a son of his. So he went to the Prophet (ﷺ) to have him witness it. He (ﷺ) said: “Have you given a gift similar to this one to all of your sons?' He replied: “No'. So he said: “Then take him back”””
SahihSahihHasan SahihBook 15 · Hadith 48