In plain terms
Maysir
Pronunciation guide not yet available.

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Maysir is gambling: a transaction where gain depends on chance, with one party's gain coming directly at another's loss. The Qur'an names it alongside khamr, intoxicants. Fatwas on modern products, such as lotteries or speculative trading, examine whether they meet this description.
Related terms
Khamr
Khamr is an intoxicant, most directly referring to wine, and used more broadly for alcoholic drink in general. The Qur'an addresses it in stages, across several revelations…
Gharar
Gharar is excessive uncertainty or ambiguity in a contract — about its subject matter, price, or terms. Islamic law treats significant gharar as a concern in trade. A small…