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John Salevurakis Alas, that’s what the Prophet said: “any increase or diminution is riba” and what the Qur’an said “you shall have your capital without suffering or causing injustice” (which the exegetes said means without increment or decrement).
How much is too much is at the heart of most jusirprudence. Minor gharar is tolerated, and so is riba in small denomination coins (fulus or copper coins), and so on. As economists, we would say too much is when the social cost exceeds the social benefit, and we need to do the calculations.
