If anyone emancipates his share in a slave, he should emancipate him completely if he has enough money to pay the full price ; but if he has none, he will be emancipated to the extent of his share. (Using translation from Abū Dāʾūd 3943)
قَالَ رَسُولُ اللهِ ﷺ «مَنْ أَعْتَقَ شَيْئًا مِنْ مَمْلُوكٍ فَعَلَيْهِ عِتْقُهُ كُلُّهُ إِنْ كَانَ لَهُ مَالٌ يَبْلُغُ ثَمَنَهُ فَإِنْ لَمْ يَكُنْ لَهُ مَالٌ عَتَقَ مِنْهُ نَصِيبُهُ»