and one’s mother-in-law and her mothers, however high, are forbidden by the mere conclusion of the contract; likewise the daughter of one’s wife, her son’s daughter, and her daughter’s daughter, however low (1), but only after consummation. If the wife dies before consummation or the marriage is dissolved, these women again become lawful to him, and the same applies when the intercourse was through mistaken belief, fornication, or sodomy. The woman involved in mutual imprecation (liʿān) is permanently forbidden, even if he later retracts his charge.

Section
It is unlawful to unite in marriage two sisters, two paternal aunts, two maternal aunts, or a woman together with her paternal aunt—or anything comparable through blood or through suckling. If he marries any two of them in a single contract, or in two contracts concluded at the same time, the marriage is invalid. Should the second contract be concluded later, or during the waiting period of the first woman—even if that period follows annulment or an irrevocable divorce—the later contract is void.

Also forbidden are: a woman in her waiting period (ʿidda); a woman undergoing istibrāʾ on account of another man; a fornicatress until she repents and completes her ʿidda; a wife whom he has divorced three times until she lawfully marries another husband; a woman in a state of iḥrām until she leaves that state; any Muslim woman marrying a disbeliever; any disbelieving woman marrying a Muslim man other than a free woman from the People of the Book; and a slave woman to a free man, unless he fears falling into hardship—even for the need of domestic service—and cannot afford (2) to marry a free woman.

A slave may not marry his mistress, nor may a man marry his own slave girl. A free man may marry his father’s slave woman, but not his son’s slave woman; and a free woman may not marry the slave of her child.

If either spouse—or that spouse’s free child or mukātab—acquires ownership of the other spouse, in whole or in part, the marriage is automatically annulled. Anyone whom it is forbidden to marry is likewise forbidden for intercourse by right of ownership, save a slave woman from the People of the Book. Marriage with an indeterminate hermaphrodite is not valid until the person’s sex is clarified.