Is it permissible to deposit money in an Islamic bank that operates on the Mudarabah (profit-sharing) system, whereby deposits are considered a participation in the bank's capital and are subject to profit or loss, and to benefit from the profits generated therefrom?

It is permissible to invest money in Islamic banks through legitimate Mudarabah, provided that the bank adheres to Sharia controls in its dealings. Islamic banks are subject to Sharia supervision, which varies according to the capability and commitment of the supervisors.