Jami` at-Tirmidhi 1367
جامع الترمذي#1367SahihNarrated 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 15:48