Marriage (Kitab Al-Nikah)
12/6. Chapter:
A Man Frees His Slave And Then Marries Her
Sunan Abi Dawud
حَدَّثَنَا هَنَّادُ بْنُ السَّرِيِّ، حَدَّثَنَا عَبْثَرٌ، عَنْ مُطَرِّفٍ، عَنْ عَامِرٍ، عَنْ أَبِي بُرْدَةَ، عَنْ أَبِي مُوسَى، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ أَعْتَقَ جَارِيَتَهُ وَتَزَوَّجَهَا كَانَ لَهُ أَجْرَانِ " .
Abu Dawud reported the Apostle of Allaah(ﷺ) as saying “Anyone who sets his slave girl free and then marries her, will have a double reward.”
Reference : Sunan Abi Dawud 2053In-book reference : Book 12, Hadith 8English translation : Book 11, Hadith 2048