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Here’s some information for those who might not know about usury as it pertains to Islam
Usury in Islam
The criticism of usury in Islam was well established during the Prophet Mohammed’s life and reinforced by various of his teachings in the Holy Quran dating back to around 600 AD. The original word used for usury in this text was riba which literally means “excess or addition”. This was accepted to refer directly to interest on loans so that, according to Islamic economists Choudhury and Malik (1992), by the time of Caliph Ulmar, the prohibition of interest was a well established working principle integrated into the Islamic economic system. It is not true that this interpretation of usury has been universally accepted or applied in the Islamic world. Indeed, a school of Islamic thought which emerged in the 19th Century, led by Sir Sayyed, still argues for a interpretative differentiation between usury, which it is claimed refers to consumptional lending, and interest which they say refers to lending for commercial investment (Ahmed, 1958). Nevertheless, there does seem to be evidence in modern times for what Choudhury and Malik describe as “a gradual evolution of the institutions of interest-free financial enterprises across the world” (1992: 104). They cite, for instance, the current existence of financial institutions in Iran, Pakistan and Saudi Arabia, the Dar-al-Mal-al-Islami in Geneva and Islamic trust companies in North America. This growing practice of Islamic banking will be discussed more fully in a later section as a modern application of usury prohibition.
http://www.alastairmcintosh.com/articles/1998_usury.htm