Q. My brother is married to someone who has 2 kids from her previous marriage. One of the kids is a girl. We would like to know If my brother is a mahram to his wife’s daughter? Please elaborate further.
A. If a husband consummates his Nikah with his wife, he becomes a Mahram (non-stranger) to his stepdaughter. (Nisaa 4/23) The ruling is the same even if the wife passes away or the marriage is terminated.
Accordingly, your brother becomes a Mahram to his step-daughter once his marriage is consummated with his wife. (stepdaughter’s mother).
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa