Allah's Messenger (ﷺ) said, any man who has a slave girl whom he educates properly, teaches good manners,manumits and marries her, will get a double reward And if any man of the people of the Scripturesbelieves in his own prophet and then believes in me too, he will (also) get a double reward And anyslave who fulfills his duty to his master and to his Lord, will (also) get a double reward."