What is the ruling on marrying a woman who was divorced three times, then married and was divorced by her second husband, while her first husband married her mother, thinking she had become unlawful for him, and he now wishes to take her back after divorcing her mother?

If a man contracts marriage with a woman, her mother becomes permanently forbidden to him. The contract that took place between this man and the girl's mother is, by consensus, null and forbidden. This marriage must be annulled immediately.

It is not permissible for this man to marry the daughter, according to the agreement of all madhhabs (schools of thought). Some jurists are of the opinion that mere intercourse (even if it is fornication) forbids the daughter, while others believe that intercourse under suspicion (shubha) or through a void contract is treated like a valid contract in terms of prohibition. If the man were to marry the daughter, his contract would be void, and he would be considered an adulterer deserving of punishment. Likewise, it is not permissible for him to remain with the mother because her marriage contract is void.