The Ruling on a Man Marrying His Son’s Slave Woman

Question : We have chosen the permissibility of a man marrying his son’s slave woman, but does his saying, “And [forbidden to you are] your sons’ wives,” pose a difficulty for him? It is well known that it is permissible for a son to have intercourse with his slave woman. We ask for your guidance on how this is the case?

Answer : We stipulated this. Yes, we stipulated two conditions: that it be permissible for him to marry her, and that she be a believer. The second is that the son not have had intercourse with her. Yes, is that clear?