From this it also follows that lending money at interest must be illegitimate, since it means using money as an end in itself: “Money is not created to earn money.” In fact, he says, “in relation to other goods, dirhams and dinars are like prepositions in a sentence,” words that, as the grammarians inform us, are used to give meaning to other words, but can only do so because they have no meaning in themselves. Money is thus a unit of measure that provides a means of assessing the value of goods, but also one that operates as such only if it stays in constant motion.
Important note!
