Yes, institutions operating under the explicit banner of an Islamic bank—such as Islami Bank Bangladesh PLC or other regional counterparts—are fundamentally structured to operate in strict compliance with Islamic Sharia law. This compliance dictates that their entire operational framework, asset allocation, and product portfolio must completely prohibit the charging or paying of interest (Riba), excessive uncertainty (Gharar), and investments in forbidden sectors like gambling or alcohol. To ensure permanent adherence, these institutions maintain an independent Sharia Supervisory Board consisting of accomplished Islamic jurisprudence scholars who audit financial contracts, review operational policies, monitor profit-and-loss sharing investment mechanisms, and certify that all commercial activities remain aligned with Islamic ethical principles.