A man pledged that his slave would be manumitted after his death. The Prophet ﷺ asked, "Who will buy the slave from me?" Nu'aim bin ʿAbdullah bought the slave and the Prophet ﷺ took its price and gave it to the owner.  

النَّبِيُّ ﷺ مَنْ يَشْتَرِيهِ مِنِّي فَاشْتَرَاهُ نُعَيْمُ بْنُ عَبْدِ اللَّهِ فَأَخَذَ ثَمَنَهُ فَدَفَعَهُ إِلَيْهِ