Forbidden to you (for marriage) are your mothers, your daughters, your sisters, your paternal aunts, and your maternal aunts, and the daughters of a brother, and the daughters of a sisters, and your (foster) mothers who have given suck to you, and your foster sisters, and the mothers of your wives, and your step-daughters who are being brought up under your care and have been born of your wives (by their former husbands,) unto whom you have gone in, but if you have not gone in unto them (- their mothers), then there is no blame on you (in marrying their daughters), and the wives of your sons who are from your own loins; and (it is forbidden to you) to keep in wedlock two sisters (at one and the same time), except what has already passed, (you have to divorce one of them). Surely, Allâh is Most Protector (against faults), Ever Merciful.