عَنْ أَبِي هُرَيْرَةَ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«أَيُّمَا امْرِئٍ مُسْلِمٍ أَعْتَقَ اِمْرَأً مُسْلِماً، اِسْتَنْقَذَ اَللَّهُ بِكُلِّ عُضْوٍ مِنْهُ عُضْوًا مِنْهُ مِنَ النَّارِ»
“Any Muslim, who emancipates another Muslim man, Allah will set free from Hell Fire an organ of his body, for every organ of the other’s (i.e. from the body of the emancipated person).” Agreed upon.
Bulugh al-Maram 1615, Book 15, Emancipation, Hadith 1. 1 min read