Which of the Algerian banks—Gulf, Al Baraka, or Al Salam—is most committed to Sharia principles in providing installment services for purchasing a car?

The permissibility of dealing with Islamic banks is conditional upon their transactions being conducted according to Sharia principles. The judgment of whether a bank is Islamic or not depends on its adherence to these principles, not merely on its name. It is necessary to investigate the extent to which the mentioned banks adhere to the Sharia principles regarding Murabaha for the one who commands the purchase and installment sales.