Ruling on marrying the daughter of one’s father’s wife from another man

This is a letter from its sender in Ha’il (M. Q. S): My father married a woman and then divorced her. Another man took her, and she bore him a daughter. Is it permissible for me to marry her? May Allah guide you.
Answer: Yes, there is no harm in marrying the daughter of one’s father’s wife, provided there is no breastfeeding that would make her forbidden. If there is no breastfeeding between him and her, the mere fact that she is his father’s wife does not make her daughter forbidden to him. If she had a daughter from before—before his father—from a previous husband, and he married her while his father married the mother, there is no harm. Likewise, regarding the new daughter from a new husband, he is permitted to marry her. Yes.