ذِكْرُ جَوَازِ بَيْعِ الْمَرْءِ الْحَيَوَانَ بَعْضَهَا بِبَعْضٍ وَإِنْ كَانَ الَّذِي يَأْخُذُ أَقَلَّ فِي الْعَدَدِ مِنَ الَّذِي يُعْطِي
"A slave came and pledged to the Prophet to emigrate, and the Prophet did not realize that he was a slave. Then his master came looking for him. The Prophet said: 'Sell him to me,' and he bought him for two black slaves. Then he did not accept the pledge from anyone until he asked: 'Is he a slave?"' (Using translation from Nasāʾī 4184)
جَاءَ عَبْدٌ فَبَايَعَ نَبِيَّ اللَّهِ ﷺ عَلَى الْهِجْرَةِ وَلَمْ يَشْعُرْ أَنَّهُ عَبْدٌ فَجَاءَ سَيِّدُهُ يُرِيدُهُ فَقَالَ النَّبِيُّ ﷺ «بِعْنِيهِ» فَاشْتَرَاهُ بِعَبْدَيْنِ أَسْوَدَيْنِ ثُمَّ لَمْ يُبَايعْ أَحَدًا حَتَّى يَسْأَلَهُ أَعْبُدٌ هُوَ؟