The Book of Marriage (Kitab Al-Nikah) 
Muslim :: Book 8 : Hadith 3327
Abu Musa reported that Allah's Messenger (may peace be upon him) said about one who emancipated a slave woman, and then married her, that for him there are two rewards.
The Book of Marriage (Kitab Al-Nikah)
Muslim :: Book 8 : Hadith 3327
Abu Musa reported that Allah's Messenger (may peace be upon him) said about one who emancipated a slave woman, and then married her, that for him there are two rewards.