The prohibition of a mother's husband marrying her daughter from fornication
Machine translationRead the Arabic original
Question:
His second question says: I am married to her mother, so am I a mahram (a relative one may not marry) to this girl?
Answer:
As long as she is her daughter, you are a mahram to her, even if she is from fornication, because she is your wife's daughter and the daughter is attributed to her. He said, "This is her mother," so you are undoubtedly a mahram to her. Yes.
His second question says: I am married to her mother, so am I a mahram (a relative one may not marry) to this girl?
Answer:
As long as she is her daughter, you are a mahram to her, even if she is from fornication, because she is your wife's daughter and the daughter is attributed to her. He said, "This is her mother," so you are undoubtedly a mahram to her. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، 104 من 123/شرح كتاب زاد المستقنع/الديات/الشجاج وكسر العظام/صالح الفوزان/الفقه/كبار العلماء — youtube.com (1:00:57)
The Arabic text is a machine transcription of the audio recording.