货币是衡量商品和劳务中所含利益的标准，即衡量货物与服务的标准。因此，货币被定义为衡量一切货物与服务的媒介。由此，例如商品的价格和工人的工资，各自代表着社会对该商品价值以及该工人劳动价值的评估。债券、股份及类似的东西不被视为货币。

Money is the standard by which we measure the benefit found in the commodity and in the effort i.e. goods and services. Therefore, money is defined as being the medium by which all goods and services are measured. Hence the price of a commodity and the wage of a worker for instance, each represents the society’s estimate of the value of that commodity and the effort of that worker. Bonds, shares and the like are not considered money.

在所有国家，对商品和服务价值的这种估量都是用单位来表示的。这些单位成为衡量从某种商品获得的利益与从某种服务获得的利益的尺度。这些单位可以充当交换媒介，而这些单位就是货币。

This estimation of the value of goods and services is, in all countries, expressed by units. These units become the measure by which the benefit obtained from a commodity and the benefit obtained from a service is measured. These units would act as a medium of exchange, and these units are money.

当伊斯兰确立买卖与雇佣的规则时,它并没有规定商品、服务和利益的交换必须以某一特定物品进行。伊斯兰反而赋予人以选择权,让他用自己所选择的任何媒介进行交换,只要交易双方相互同意。因此,一个男子以教授女子《古兰经》作为聘礼娶她为妻是允许的,正如一个人为某件商品的主人工作一天来换取该商品,或为某人工作一天以换取一定数量的枣子等等也是允许的。因此,交换可以用人们所希望的任何东西来进行。然而,当涉及以特定的货币单位来交换商品时,伊斯兰已经为我们指明了交换所应使用的货币单位。它把穆斯林限定于一种特定的货币,即金和银。伊斯兰并没有让社会自行以固定或可变的货币单位来表达对商品或服务所带来的利益的估价,从而任由社会随意操作。相反,伊斯兰规定了这些货币单位,社会通过它们来表示商品和服务的价值,即价格。