This article aims to discuss fractional reserve banking applied by Islamic banking. The practice of fractional reserve banking applied by Sharia banking is part of contemporary practice that was not discovered at the time of the Prophet. Thus, a comprehensive ijtihadi study of the Islamic banking system is needed, considering that the practice of fractional reserve banking applied by Islamic banking is also part of conventional banking practices. The practice of fractional reserve banking in conventional banking has been proven to have an impact on banking institutions and has an impact on the monetary crisis which destabilizes the country's economic stability. In addition, the practice of fractional reserve banking also contradicts Islamic...