صحيح البخاري Sahih Bukhari كتاب الإكراه The Book of Al-Ikrah (Coercion)
بَابُ إِذَا أُكْرِهَ حَتَّى وَهَبَ عَبْدًا أَوْ بَاعَهُ لَمْ يَجُزْ:

(4) Chapter. If someone gives a slave as a present or sold him under coercion, his deed is invalid.

1 hadith
Hadith 6947
حَدَّثَنَا أَبُو النُّعْمَانِ ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ ، عَنْ عَمْرِو بْنِ دِينَارٍ ، عَنْ جَابِرٍ رَضِيَ اللَّهُ عَنْهُ " أَنَّ رَجُلًا مِنَ الْأَنْصَارِ دَبَّرَ مَمْلُوكًا وَلَمْ يَكُنْ لَهُ مَالٌ غَيْرُهُ ، فَبَلَغَ ذَلِكَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، فَقَالَ : مَنْ يَشْتَرِيهِ مِنِّي ؟ " ، فَاشْتَرَاهُ نُعَيْمُ بْنُ النَّحَّامِ بِثَمَانِ مِائَةِ دِرْهَمٍ ، قَالَ : فَسَمِعْتُ جَابِرًا ، يَقُولُ : عَبْدًا قِبْطِيًّا مَاتَ عَامَ أَوَّلَ .
Narrated Jabir: A man from the Ansar made his slave, a Mudabbar. And apart from that slave he did not have any other property. This news reached Allah's Apostle and he said, "Who will buy that slave from me?" So Nu'aim bin An-Nahham bought him for 800 Dirham. Jabir added: It was a coptic (Egyptian) slave who died that year.
Hadith Reference Sahih Bukhari / The Book of Al-Ikrah (Coercion) / Hadith: 6947
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة