The purchase of a slave from the enemy

وَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لِسَلْمَانَ كَاتِبْ. وَكَانَ حُرًّا فَظَلَمُوهُ وَبَاعُوهُ. وَسُبِيَ عَمَّارٌ وَصُهَيْبٌ وَبِلاَلٌ، وَقَالَ اللَّهُ تَعَالَى: {وَاللَّهُ فَضَّلَ بَعْضَكُمْ عَلَى بَعْضٍ فِي الرِّزْقِ فَمَا الَّذِينَ فُضِّلُوا بِرَادِّي رِزْقِهِمْ عَلَى مَا مَلَكَتْ أَيْمَانُهُمْ فَهُمْ فِيهِ سَوَاءٌ أَفَبِنِعْمَةِ اللَّهِ يَجْحَدُونَ}.The Prophet ﷺ asked Salman to make a contract of his manumission with his masters. In reality, Salman was a free man but the Mushrikun oppressed him and sold him. ‘Ammar, Suhaib, and Bilal were taken as captives in (war) booty. Allah تعالى said: “And Allah has preferred some of you above others in wealth and properties. Then, those who are preferred will by no means hand over their wealth and properties to those (slaves) whom their right hand possess, so that they may be equal with them in respect thereof. Do they then deny the Favour of Allah?” (V.16:71)