Is it permissible to take from an inheritance registered in our names in usurious or commercial banks after the father's death, or should we only take the principal, or should we extract a certain percentage?

If a father registers his assets in the names of his children but they do not take possession of them, these assets are considered an inheritance that must be divided among all heirs. The usurious portion of it must be extracted and spent on the welfare of Muslims, such as aiding the poor and needy, and building hospitals and schools. If it is known that there is unlawful wealth in the inheritance and its amount is uncertain, the amount of the unlawful wealth should be estimated through independent reasoning (ijtihad (definition)).