"The Messenger of Allah said: 'Whoever sets free his share of a slave, and he has sufficient wealth to set him free completely by paying the price of the slave, then he should set him free with his own wealth."' (Using translation from Nasāʾī 4699)
قَالَ رَسُولُ اللهِ ﷺ «مَنْ أَعْتَقَ شِرْكًا لَهُ فِي مَمْلُوكٍ فَكَانَ لَهُ مِنَ الْمَالِ مَا يَبْلُغُ ثَمَنَهُ بِقِيمَةِ الْعَدْلِ فَهُوَ عَتِيقٌ مِنْ مَالِهِ»