Forbidden unto you are your mothers and your daughters and your sisters and your father's sisters and your mother's sisters, and your brother's daughters and your sister's daughters. and your foster mothers and your foster sisters, and the mothers of your wives and your step-daughters, that are your wards, born of your wives unto whom ye have gone in, but if ye have not gone in unto them, no sin shall be on you, and the wives of your sons that are from your own loins, and, also that ye should have two sisters together, except that which hath already passed; verily Allah is ever Forgiving, Merciful.