Sahih Muslim 997 c
Jabir b. 'Abdullah said that a person among the Ansar declared his slave free after his death, as he had no other property. This news reached the Messenger of Allah (ﷺ) and he said:
Who will buy him from me? And Nu'aim b. al-Nahham bought him for eight hundred dirhams and he handed them over to him, 'Amr (one of the narrators) said: I heard Jabir b. 'Abdullah as saying: He was a Coptic slave, and he died in the first year (of the Caliphate of 'Abdullah b. Zubair).
حَدَّثَنَا أَبُو الرَّبِيعِ، سُلَيْمَانُ بْنُ دَاوُدَ الْعَتَكِيُّ حَدَّثَنَا حَمَّادٌ، - يَعْنِي ابْنَ زَيْدٍ - عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، أَنَّ رَجُلاً، مِنَ الأَنْصَارِ أَعْتَقَ غُلاَمًا لَهُ عَنْ دُبُرٍ لَمْ يَكُنْ لَهُ مَالٌ غَيْرُهُ فَبَلَغَ ذَلِكَ النَّبِيَّ صلى الله عليه وسلم فَقَالَ ‏
"‏ مَنْ يَشْتَرِيهِ مِنِّي ‏"‏ ‏.‏ فَاشْتَرَاهُ نُعَيْمُ بْنُ عَبْدِ اللَّهِ بِثَمَانِمِائَةِ دِرْهَمٍ فَدَفَعَهَا إِلَيْهِ ‏.‏ قَالَ عَمْرٌو سَمِعْتُ جَابِرَ بْنَ عَبْدِ اللَّهِ يَقُولُ عَبْدًا قِبْطِيًّا مَاتَ عَامَ أَوَّلَ ‏.‏