This paper will explain the economic contribution of Yahya ibn Umar regarding the role of the state in the economic in the market. Yahya ibn Umar had contributed his thoughts in the 9th century AD. The role of the state in regulating the market and the price of stems is not too dominant, because the state carries out uteryency if in mrkanisme keep goods in the market, such as monopolistic practices such as ihtikar, cartel and stockpiling of goods. So, the role of Century is very necessary to control the hatga and goods for the sake of the importance and welfare of the community.
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