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Chat GPT: Yes, both Christianity and Islam traditionally forbid usury, though their interpretations and applications can differ significantly.

In Christianity, the prohibition of usury was more emphasized in the past, particularly during the Middle Ages. Usury, which was defined historically as charging any interest on loans, was condemned by the Catholic Church and other Christian authorities. This stance has evolved over time, and modern interpretations generally permit lending at interest, as long as the rates are not exploitative. Various passages in the Bible, especially in the Old Testament, such as Exodus 22:25, Deuteronomy 23:19-20, and Leviticus 25:35-37, advise against charging interest on loans made to the needy or one's community members.

Islam strictly prohibits all forms of usury, which it calls "riba." The prohibition is firmly rooted in the Quran and Hadith (sayings and actions of Prophet Muhammad). The Quran explicitly forbids riba in several verses (e.g., 2:275-279, 3:130, 30:39), making it clear that any gain or profit derived from loans of money, where the lender makes a return simply from the amount loaned, is considered an unjust and exploitative practice. Instead, Islamic finance relies on risk-sharing methods of investment and profit-and-loss sharing models, such as Murabaha (mark-up financing) and Musharaka (joint venture).

These religious teachings have led to the development of distinct financial practices and institutions, such as Islamic banking, which adheres to these principles.

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and in case you were wondering: Yes, Judaism also traditionally prohibits usury, specifically interest on loans between fellow Jews. This prohibition is based on various passages within the Torah, particularly in the books of Exodus, Leviticus, and Deuteronomy. For example, Exodus 22:25 states that if you lend money to any of the poor among your people, you should not act as a creditor and charge interest. Similarly, Leviticus 25:36-37 instructs not to take interest or any profit from a loan to your countryman.

The prohibition is primarily concerned with ensuring fairness and preventing exploitation within the community. However, the laws allow for charging interest in loans to non-Jews (Deuteronomy 23:20), which was a common practice in historical contexts where Jews lived among other populations and were often restricted in their economic activities.

Over time, various rabbinical interpretations and legal loopholes (such as the "Heter Iska," a halachic mechanism that redefines certain types of loans as investments, thereby permitting profits) have been developed to allow Jews to engage in commerce and finance in ways that align with modern economic systems while still adhering to the ethical and legal frameworks of traditional Jewish law.

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