There are several fatwas issued about buying and selling is not sequentially and respectively describes their own subject matter. As a result of modern Islamic legal thought, DSN-MUI fatwa interesting to study inductively to find a linkage study of classical fiqh with the provisions of the banking system and mechanism in these fatwas . The problems studied in this paper is the concept of buying and selling in the DSN-MUI fatwa is How it relates to the system of fiqh and Shari'ah banking mechanism in DSN-MUI fatwa? This study is the research literature by using a qualitative approach.The study found a link between the data and the system of fiqh with the provisions of Shari'ah banking mechanism DSN-MUI fatwa about buying and selling. The con...