(6) باب فَضْلِ الْعِتْقِ
Abu Huraira (Allah be pleased with him) reported Allah's Messenger (may peace benpon him) as saying:
He who emancipates a slave, Allah will set free from Hell every limb (of his body) for every limb of his (slave's) body, even his private parts.
Reference: Sahih Muslim 1509 b
In-book reference: Book 20, Hadith 26
USC-MSA web (English) reference(deprecated numbering scheme): Book 9, Hadith 3603