“This is concerning my question before abu ‘Abd Allah (a.s.), about the case of a man who has a slave-girl with whom he goes to bed seeking to have a child, but does not become fortunate to have a child and gives her to his brother as a gift or sells her and she gives birth to several children; if his children from a woman other than her can marry the children of his brother from her. He (the Imam) asked me to say it again. I said it again and he (the Imam) said, ‘Yes, it is not unlawful.’”