Forbidden to you are your mothers, and your daughters, and your sisters, and your aunts, both on the father and mother's side, and your nieces on the brother and sister's side, and your foster-mothers, and your foster-sisters, and the mothers of your wives, and your step-daughters who are your wards, born of your wives to whom ye have gone in: (but if ye have not gone in unto them, it shall be no sin in you to marry them;) and the wives of your sons who proceed out of your loins; and ye may not have two sisters; except where it is already done. Verily, God is Indulgent, Merciful!