"Sa'd, 'Ammar and I entered into a partnership on the Day of Badr, (agreeing to share) whatever was allotted to us. 'Ammar and I did not get anything. But sa'd got two prisoners."  

اشْتَرَكْتُ أَنَا وَعَمَّارٌ وَسَعْدٌ يَوْمَ بَدْرٍ فَجَاءَ سَعْدٌ بِأَسِيرَيْنِ وَلَمْ أَجِئْ أَنَا وَعَمَّارٌ بِشَىْءٍ  

"Whoever sets free his share of a slave should set him free completely from his own wealth, if he has enough wealth to cover the price of the slave."  

أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ أَعْتَقَ شِرْكًا لَهُ فِي عَبْدٍ أُتِمَّ مَا بَقِيَ فِي مَالِهِ إِنْ كَانَ لَهُ مَالٌ يَبْلُغُ ثَمَنَ الْعَبْدِ