seyed abbas mousavian's theorizing in reforming the economic structure of the country is very significant is considered as moving on a razor's edge. because the financial relations of the market are intertwined with jurisprudential and legal issues of the economy, which on the one hand are related to religious and religious sensitivities and on the other hand. it is related to the concepts of economic sensitivity such as capital, profit and bank income, which could lead to a disaster if the rights of the customer and the bank are compromised. it was a tool used in western capital markets. it was proposed as hedging and hedging the risk of these financial instruments. and we with paying attention to the depth of shia jurisprudence. and according to the nature of such tools that exist in the western capitalist markets, we evaluated and investigated and found out that instead of using a contract of sale , they used the exchange of commitments, if we ask mr. mousaviano to define it. kanim answered this intelligence in the middle. on the one hand, he was aware of the legal literature, on the o