"A man among the Ansar stated that his salve was to be set free after he died; he was in need, and he owed a debt. The Messenger of Allah [SAW] sold him (the slave) for eight hundred Dirhams, and he gave (the money) to him and said: 'Pay off your debt and spend on your dependents.'"  

أَعْتَقَ رَجُلٌ مِنَ الأَنْصَارِ غُلاَمًا لَهُ عَنْ دُبُرٍ وَكَانَ مُحْتَاجًا وَكَانَ عَلَيْهِ دَيْنٌ فَبَاعَهُ رَسُولُ اللَّهِ ﷺ بِثَمَانِمِائَةِ دِرْهَمٍ فَأَعْطَاهُ فَقَالَ اقْضِ دَيْنَكَ وَأَنْفِقْ عَلَى عِيَالِكَ