Fatimah bint Ali bin Abi Talib (may Allah have mercy on her) narrates that her father, Sayyiduna Ali (may Allah be pleased with him), narrated from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "Whoever frees a Muslim or believing soul (a male or female slave), Allah Almighty will, in return for each of its limbs, protect each limb of the one who frees it from the Fire of Hell."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyiduna Ali (may Allah be pleased with him) only through this chain; al-Hakam bin Abd al-Rahman bin Abi Nu'm is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب العين / 3738
Hadith Takhrij«أخرجه الضياء المقدسي فى «الأحاديث المختارة» برقم: 703، والنسائي فى «السنن الكبرى» برقم: 4857، وابن أبي شيبة فى «مصنفه» برقم: 12776، والطحاوي فى «شرح مشكل الآثار» برقم: 715، والطبراني فى «الكبير» برقم: 186»