Arabic Text
حَدَّثَنَا عِمْرَانُ بْنُ مَيْسَرَةَ، حَدَّثَنَا عَبْدُ الْوَارِثِ، حَدَّثَنَا أَيُّوبُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ أَعْتَقَ شِقْصًا لَهُ مِنْ عَبْدٍ ـ أَوْ شِرْكًا أَوْ قَالَ نَصِيبًا ـ وَكَانَ لَهُ مَا يَبْلُغُ ثَمَنَهُ بِقِيمَةِ الْعَدْلِ، فَهْوَ عَتِيقٌ، وَإِلاَّ فَقَدْ عَتَقَ مِنْهُ مَا عَتَقَ ". قَالَ لاَ أَدْرِي قَوْلُهُ عَتَقَ مِنْهُ مَا عَتَقَ. قَوْلٌ مِنْ نَافِعٍ أَوْ فِي الْحَدِيثِ عَنِ النَّبِيِّ صلى الله عليه وسلم.
English Translation
Narrated Nafi: Ibn 'Umar said, "Allah's Apostle said, 'If one manumits his share of a jointly possessed slave, and can afford the price of the other shares according to the adequate price of the slave, the slave will be completely manumitted; otherwise he will be partially manumitted.' " (Aiyub, a sub-narrator is not sure whether the saying " ... otherwise he will be partially manumitted" was said by Nafi' or the Prophet.)
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.