Qutaybah b. Saʿīd > Layth > Ibn al-Hād > ʿUmar b. ʿAlī b. Ḥusayn > Saʿīd b. Marjānah > Abū Hurayrah

I heard Messenger of Allah ﷺ as saying: He who emancipates a believing slave. Allah will set free from Fire his every limb for every limb of his (slave's), even his private parts for his.

أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا لَيْثٌ عَنِ ابْنِ الْهَادِ عَنْ عُمَرَ بْنِ عَلِيِّ بْنِ حُسَيْنٍ عَنْ سَعِيدِ بْنِ مَرْجَانَةَ عَنْ أَبِي هُرَيْرَةَ قَالَ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «مَنْ أَعْتَقَ رَقَبَةً مُؤْمِنَةً أَعْتَقَ اللهُ بِكُلِّ عُضْوٍ مِنْهُ عُضْوًا مِنَ النَّارِ حَتَّى يُعْتِقَ فَرْجَهُ بِفَرْجِهِ»