The current presense of syari'ah banking in Indonesia seems more gliterring than any other Islamic economic institutions, such as reksadana syari'ah, BMT, syirkah ta'awuniyah, Ahad Net Syari'ah, and asuransi takaful. regardless its complex backround, it is primely caused by the significance of bank function in general, and specially by its products that are considered more suitable to the princ…