Women with whom marriage is forbidden
2529. Matrimonial relation is Haraam with women who are oneís Mahram, for instance, mother, sister, and mother-in-law.
2530. If a man marries a woman, then her mother, her maternal grandmother, her paternal grandmother and all women as the line ascends are his Mahram, even if he may not have had sexual intercourse with the wife.
2531. If a person marries a woman, and has sexual intercourse with her, the daughters and granddaughters (daughters of sons, or of daughters) of the wife and their descendants, as the line goes low, become his Mahram, irrespective of whether they existed at the time of his marriage, or were born later.
2532. If a man marries a woman, but does not have sexual intercourse with her, the obligatory precaution is that as long as their marriage lasts, he should not marry her daughter.
2533. The paternal and maternal aunt of a man, and the paternal and maternal aunt of his father, and the paternal and maternal aunt of his paternal grandfather, and the paternal and maternal aunt of his mother, and the paternal and maternal aunt of his maternal grandmother, as the line ascends, are all his Mahram.
2534. The husbandís father and grandfather, however high, are the wifeís Mahram. Similarly, the husbandís sons and the grandsons (son of his sons or of daughters), however low, are her Mahram, regardless of whether they existed at the time of her marriage or were born afterwards.
2535. If a man marries a woman (whether the marriage be permanent or temporary), he cannot marry her sister, as long as she is his wife.
2536. If a person gives a revocable divorce to his wife, in the manner, which will be explained under the rules relating to divorce, he cannot marry her sister during the Iddah. But if it is an irrevocable divorce, he can marry her sister. And if it is the Iddah of temporary marriage, the recommendatory precaution is that one should not marry his wifeís sister during that period.
2537. A man cannot marry the niece (brotherís or sisterís daughter) of his wife without her permission. But if he marries his nieces without his wifeís permission, and she later consents to the marriage, it will be in order.
2538. If the wife learns that her husband has married her niece (brotherís daughter or sisterís daughter) and keeps quiet, and if she later does not consents to that marriage, it will be void. If she keeps quiet and it implies that she has consent in her heart, as an obligatory precaution, he must divorce the niece unless she approves it.
2539. A Muslim woman cannot marry a Kafir and a male Muslim also cannot marry a Kafir woman. However, there is no harm in contracting temporary marriage with Ahlul Kitab, such as Jewish and Christians women.
2540. If a person commits fornication with his paternal or maternal aunt, he cannot marry their daughters.
2541. If a person marries the daughter of his paternal or maternal aunt and before having intercourse, he commits fornication with her mother, as an obligatory precaution, he must divorce her.
2542. If a person commits fornication with a woman other than his paternal or maternal aunt, the recommended precaution is that he should not marry her daughter. In fact, if he marries a woman, and commits fornication with her mother after having sexual intercourse with her, she is not Haraam for her and if it happens before that, as an obligatory precaution, he must divorce her.
2543. If a person commits fornication with a woman who is in the Iddah of her revocable divorce, that woman is not Haraam for him. And if he commits fornication with a woman, who is in the Iddah of temporary marriage, or of irrevocable divorce, or in the Iddah of death, he can marry her afterwards. The meaning of revocable divorce and irrevocable divorce, and Iddah of temporary marriage, and Iddah of death, will be explained under the rules relating to divorce.
2544. If a person commits fornication with an unmarried woman and who is not in Iddah, he may marry her later, although it is a recommendatory precaution to wait until she becomes Pak. The same applies if someone else wants to marry her.
2545. If a person contracts Nikah with a woman who is in the Iddah of another man, and if the man and the woman both know, or any one of them knows that the Iddah of the woman has not yet come to an end, and if they also know that marrying a woman during her Iddah is Haraam, that woman will become Haraam for the man forever, even if after the Nikah the man may not have had sexual intercourse with her.
2546. If a person contracts Nikah with a woman who is in the Iddah of another man, and has sexual intercourse with her, she becomes Haraam for him forever even if he did not know that she was in her Iddah, or did not know that it is Haraam to marry a woman during her Iddah.
2547. If a person marries a woman knowing that she has a husband, he should get separated from her, and should also not marry her at any time afterwards.
2548. If a married woman commits adultery, she does not become Haraam for her husband. And if she does not repent, and persists in her action, it will be better that her husband divorces her, though he should pay her Mahr.
2549. In the case of the woman, who has been divorced, or a woman who contracted a temporary marriage and her husband forgoes the remaining period of marriage, or if the period of her temporary marriage ends, if she marries after some time, and then doubts whether at the time of her second marriage, the Iddah of her first husband had ended or not, she should ignore her doubt.
2550. If a Baligh person commits sodomy with a boy, the mother, sister and daughter of the boy become Haraam for him. And the same law applies when the person on whom sodomy is committed is an adult male, or when the person committing sodomy is Na-Baligh. But if one suspects or doubts whether penetration occurred or not, then the said woman would not become Haraam.
2551. If a person marries the mother or sister or daughter of a boy, and commits sodomy with the boy after the marriage and intercourse, they will not become Haraam for him. But if he does it after Aqd and before intercourse, as an obligatory precaution, they are Haraam.
2552. If a person who is in the state of Ehram (which is one of the acts to be performed during Hajj or Omrah) marries a woman, the Nikah is void, and if he knew that it was Haraam for him to marry in the state of Ehram, he cannot marry that woman again.
2553. If a woman who is in the state of Ehram marries a man who is not in the state of Ehram, he Nikah is void. And if she knew that it was Haraam to marry in the state of Ehram, as an obligatory precaution, she should not marry that man thereafter.
2554. If a man does not perform Tawafun Nisa (which is one of the acts to be performed during Hajj and Umrah Mufradah), his wife and other women become Haraam for him. Also, if a woman does not perform Tawafun Nisa, her husband and other men become Haraam for her. But, if they (man or woman) perform Tawafun Nisa later, they become Halal.
2555. If a person contracts Nikah with a non-Baligh girl, and has sexual intercourse before she has completed her nine years, if he causes Ifza, he must not have intercourse again with her.
2556. A woman, who is divorced three times, becomes Haraam for her husband. But, if she marries another man, subject to the conditions, which will be mentioned under the rules pertaining to divorce, her first husband can marry her again.