The Messenger of Allah ﷺ asked him, "Who is this boy?"He replied, "My slave. My father gave him to me."The Prophet ﷺ asked, "Did he give the same to all your brothers as he gave to you?"He said, "No."The Prophet ﷺ said, "Then return him."
حدثنا عثمان بن أبي شيبة حدثنا جرير عن هشام بن عروة عن أبيه حدثني النعمان بن بشير قال
له رسول الله ﷺ ما هذا الغلام قال غلامي أعطانيه أبي قال فكل إخوتك أعطى كما أعطاك قال لا قال فاردده
No references are available.
Muslim narrated it in the Book of Gifts, chapter "Disliking the Preference of Some Children Over Others in Gifts," hadith no. 12/1623, from the hadith of Jareer, by this route.