Overall meaning : Forbidden to the believers for marriage, Allah declares, are their mothers, their daughters, their sisters, their paternal and maternal aunts, their brothers’ daughters, their sisters’ daughters, their foster mothers who have breastfed them, their foster sisters, their wives’ mothers (whether or not they have consummated the marriage with their wives), their stepdaughters, born of their wives with whom they have consummated the marriage (though if they have not consummated the marriage with them they are allowed to  marry their daughters once they divorce their mothers), the wives of their own sons (whether or not their sons have consummated the marriage with them), and to take two sisters together in marriage, except for what has happened of that nature in the pre-Islamic era or before such a marriage is declared forbidden. Allah is All-Forgiving, All-Merciful.