Q. My friend ask me to ask you if a step daughter can get Married to her step father if her step father divorces his wife (her mother)?
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.
Hence, it will not be permissible for a stepfather to marry his stepdaughter once his marriage is consummated with his wife (stepdaughter’s mother).
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa