Gharar refers to excessive uncertainty, ambiguity, or deception in a contractual transaction. In Islamic finance, contracts involving significant gharar are considered impermissible because they expose one or both parties to unnecessary risk and potential exploitation.
Scholars distinguish between minor gharar (which is tolerable and present in most everyday transactions) and major gharar (which renders a contract impermissible). Major gharar involves uncertainty about fundamental elements of a transaction — such as the subject matter, price, or delivery terms being unknown or unknowable. For example, selling fish that have not yet been caught or goods whose specifications are deliberately vague.
In the context of modern finance, gharar is relevant to the evaluation of derivatives, options, futures contracts, and certain insurance products. Some scholars view conventional insurance as containing excessive gharar because the insured pays premiums without knowing whether a claim will ever be made. This has led to the development of Takaful (Islamic insurance) as an alternative based on mutual cooperation.
Related Terms
Riba(ربا)
Interest or usury — any guaranteed, predetermined return on a loan or investment. Strictly prohibited in Islamic finance.
Maysir(ميسر)
Gambling or games of chance. Any transaction where the outcome depends entirely on chance is prohibited in Islamic finance.
Takaful(تكافل)
Islamic insurance based on mutual cooperation and shared responsibility, structured to avoid the gharar present in conventional insurance.
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