REWARD FOR FREEING A BELIEVING SLAVE H 1387 "Whosoever frees the neck of a believer, Allah will free from the Fire a limb for each limb, even his genitals." R 1387 Bukhari and Muslim with a chain up to Abu Hurairah who related that the Messenger of Allah, praise and peace be upon him, said this.
1358- وعن أَبي هريرة رضي الله عنه قَالَ : قَالَ لي رسول الله صلى الله عليه وآله وسلم : "مَنْ أَعْتَقَ رَقَبَةً مُسْلِمَةً أعْتَقَ اللهُ بِكُلِّ عُضْوٍ مِنْهُ ، عُضْواً مِنْهُ في النَّارِ ، حَتَّى فَرْجَهُ بِفَرْجِهِ" متفقٌ عَلَيْهِ .