Hadith #686
Chapter: The Book of Jihad
كتاب الجهاد
Arabic Text
وعنه قال:
قال رسول الله صلى الله عليه وسلم : "ثلاثة لهم أجران: رجل من أهل الكتاب آمن بنبيه، وآمن بمحمد، والعبد المملوك إذا أدى حق الله، وحق مواليه، ورجل كانت له أمة فأدبها فأحسن تأديبها وعلمها فأحسن تعليمها، ثم أعتقها فتزوجها فله أجران" ((متفق عليه))
English Translation
Abu Musa Al-Ash'ari (may Allah be pleased with him) reported that the Messenger of Allah ﷺ said, "Three kinds of people will have a double reward: A man from the People of the Book who believes in his Prophet and (also) believes in Muhammad; a slave who discharges properly the duties towards Allah and towards his master; and a man who possesses a slave-girl and teaches her manners, educates her well, and frees her and then marries her.".
Quran References
Reference: Riyadh al-Salihin, Book 11, Hadith 686
Sunnah.com ref: riyadh-salihin 686
Islam.wiki ID: IWH-67524