Should the money from bank interest in a savings account of a deceased sister be inherited?

The benefits from a savings account in an interest-based bank are, according to the more preponderant opinion, not permissible for its owner nor for his heirs. For the heirs, only the lawful principal is permissible. As for the usurious increase, it should be spent on public welfare or given to the poor and needy. Some scholars are of the opinion that unlawful wealth, due to its method of acquisition and not its essence, is only forbidden for its acquirer. And whoever acquires it from him through a permissible means, such as inheritance, it is not forbidden for them.