Narrated Al-Nu'man b. Bashir:
That his father had given him a slave. The Messenger of Allah ﷺ said: What is this slave ? He replied: This is my slave which my father has given me. He asked: Has he given all your brothers the same as he has given you? He replied: No. He then said: Return it, then.

حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، حَدَّثَنِي النُّعْمَانُ بْنُ بَشِيرٍ، قَالَ أَعْطَاهُ أَبُوهُ غُلاَمًا فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ " مَا هَذَا الْغُلاَمُ " . قَالَ غُلاَمِي أَعْطَانِيهِ أَبِي . قَالَ " فَكُلَّ إِخْوَتِكَ أَعْطَى كَمَا أَعْطَاكَ " . قَالَ لاَ . قَالَ " فَارْدُدْهُ " .