I have donated this slave of mine to my son. Messenger of Allah ﷺ said: Have you donated to every one of your sons (a slave) like this? He said: No. Thereupon Messenger of Allah (may peace he upon him) said: Then take him back.
أَنَّهُ قَالَ إِنَّ أَبَاهُ أَتَى بِهِ رَسُولَ اللَّهِ ﷺ فَقَالَ إِنِّي نَحَلْتُ ابْنِي هَذَا غُلاَمًا كَانَ لِي فَقَالَ رَسُولُ اللَّهِ ﷺ أَكُلَّ وَلَدِكَ نَحَلْتَهُ مِثْلَ هَذَا فَقَالَ لاَ فَقَالَ رَسُولُ اللَّهِ ﷺ فَارْجِعْهُ