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.'"
Reference: Jami` at-Tirmidhi 1367 In-book : Book 15, Hadith 48 English translation : Vol. 30, Book 13, Hadith 1367
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