What is the ruling on withdrawing interest from the orphans' money deposited in a non-Islamic bank for their living expenses, and is it permissible for the wife to use this interest for living necessities, and what should she do with it if it is unlawful?

It is not permissible for guardians to invest orphans' money in interest-based banks. It is also not permissible for the widow and her children to benefit from interest-based gains except in cases of dire necessity, such as the unavailability of food, clothing, and shelter. If they are not in such a state of necessity, they must dispose of it by spending it on the welfare of Muslims, such as the poor and the needy, and building hospitals.