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.
Reference: Sunan Abi Dawud 3543 In-book : Book 24, Hadith 128 English translation : Book 23, Hadith 3536
Help us gift a modern, ad-free Islamic application for the Muslim Ummah. Your donation will be recorded as Sadaqah Jariyah in your book of deeds, In Sha Allah.