Volume 7, Book 62, Number 20:
Narrated Abu Burda’s father:
Allah’s Apostle said, any man who has a slave girl whom he educates properly, teaches good man –
ners, manumits and marries her, will get a double reward And if any man of the people of the Scrip –
tures believes in his own prophet and then believes in me too, he will (also) get a double reward And
any slave who fulfills his duty to his master and to his Lord, will (also) get a double reward.”