What is the ruling on a man marrying a girl who inherited money, properties, and business ventures from her deceased father, who used to work in a usurious bank?

If the inheritance of the girl's father originated from a bank and another permissible source, then there is no harm for the heirs in taking their shares, while giving in charity an amount equivalent to the proportion of the unlawful.

However, if the entire inheritance is from unlawful money, scholars have differed: - According to the view that the prohibition extends: The money would be unlawful for them, and the inheritance must be spent on charitable causes and public welfare. But if they are in need, they are permitted to take what suffices them, then spend the surplus on charitable deeds. This detail applies to preparing the girl for marriage and other forms of benefit. - According to the view that the prohibition is limited to the one who earned it: There is no issue with them benefiting from their deceased relative's money.

The more cautious view is that the prohibition extends, and this is the view of the majority of scholars.