自由贸易理论认为，国与国之间的贸易交易应当不受限制，不设关税，也不存在任何进口障碍。这一学派主张废除国家的控制。国家将不再有义务控制进出口，因为进口与出口之间的平衡将由自然力量实现。因此，这种平衡将自然而然、自动地出现。

The theory of free trade states that trade transactions between countries should be conducted without restrictions, customs duties or any obstacle to imports. This school of thought champions the abolishment of the State’s control. The State would no longer be obliged to control imports and exports, because the equilibrium between imports and exports would be achieved by natural forces. Therefore, the equilibrium would occur naturally and automatically.

这一理论与伊斯兰教相悖，因为对外贸易属于国家与其他国家、民族和民众之间关系的一部分。这些关系都由国家掌控，而国家将组织并直接监督此类关系，无论是个人之间的关系，还是经济或贸易关系。因此，采纳自由贸易理论是完全错误的，因为伊斯兰国家会禁止某些商品的出口，同时允许其他商品出口。伊斯兰国家还将处理交战方商人与有盟约者的问题，不过，它对本国公民的对外贸易，只会像监督其本地贸易那样进行监督。

This theory contradicts Islam, because foreign trade is one of the relations between the State and other states, peoples and nations. These relations are all controlled by the State and it is the State who would organise and directly supervise such relations, whether these were relations between individuals, or economic or trade relations. Therefore, it would be totally wrong to adopt the theory of free trade, for the Islamic State would prevent the export of certain commodities while permitting others. She would also handle the issue of the belligerent traders and the covenantors, though she would only supervise her citizens in their foreign trading the same way as in their local trading.