Is it permissible to spend from the interest of usurious banks on oneself, and what is incumbent upon one who has previously spent from it while having no other source of income?

The aforementioned profit is permissible if the money is in an Islamic bank and the account is an investment account that invests in permissible matters. However, if the account is in an interest-based (usurious) bank, then one must repent from it, close the account, and dispose of the profit by giving it to general Muslim welfare, because it is prohibited usury (riba), and it is not permissible to benefit from it except for the poor and needy. If any of it has been used, then repentance is required through regret, and if one is wealthy, they should donate an equivalent amount.