1. What is the ruling on disposing of usurious profits resulting from money I inherited, which my brother deposited in a usurious certificate without my knowledge? And are these profits considered my right? 2. Is it permissible for me to continue depositing my money under the savings and agency system in an Islamic bank and benefit from the calculated returns, given the doubts about the supervisory body's adherence to the Salafi school of thought?

If the money your father left behind was deposited in a riba-based (usurious) bank during his lifetime, then it is inherited along with its interest. It is not permissible for you or your brother to deposit it in another riba-based bank. The usurious interest generated from it must be disposed of by giving it to the poor or spending it on general Muslim welfare. It is permissible to invest the money in a bank whose transactions are governed by Sharia rulings, after careful investigation and confirmation of the permissibility of the investment. If the impermissibility of the transaction becomes clear after participation, then it is obligatory to withdraw the money from the savings or investment account and dispose of half of the interest, unless the exact percentage of the forbidden amount is known, in which case it should be disposed of precisely.