The following women are to close for you to marry them: your mothers, daughters, sisters, father’s sister, mother’s sister, brother’s daughter, sister’s daughter, foster mother (who breast fed you) and their daughter, mother in law, step daughter (under your guardianship), step daughters (unless you divorced their mother before having sex with them), ex-wife of your biological sons. It is also forbidden for you to marry two sisters at the same time unless it has happened before the revelation of this law as God is the Most Forgiving, the Most Merciful.