Does marriage during the 'iddah period, out of ignorance thereof, nullify the wife's right to inheritance and the children's right? And how is the inheritance divided in the presence of the husband's parents and their children? And does this marriage invalidate her being his wife in Paradise?

A woman's marriage before the expiration of her iddah (definition) (waiting period) is null and void by consensus, and consequently, neither spouse inherits from the other. As for the children resulting from this فاسد (invalid/corrupt) marriage, they are attributed to their father and inherit from him, as long as he believed the marriage to be valid. If the man has no other children or wife besides these, his inheritance is distributed among his parents, son, and daughter: for each of the father and mother, one-sixth, and the remainder between the son and daughter, with the male receiving the share of two females.