Equality must be known under the relevant legal unit, not inferred from the visual resemblance of two sealed bags. Approximate weight or volume is not a substitute for a proven match where equality is required.
Suppose two bags of wheat are swapped because they appear similar. If their equal volumetric quantities have not been established, the parties cannot simply assume the condition has been fulfilled. Exact measurement removes the uncertainty.
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Riba: Operative Causes, Unequal Exchange and Deferral
Equality must be known under the relevant legal unit, not inferred from the visual resemblance of two sealed bags. Approximate weight or volume is not a substitute for a proven match where equality is required.
Suppose two bags of wheat are swapped because they appear similar. If their equal volumetric quantities have not been established, the parties cannot simply assume the condition has been fulfilled. Exact measurement removes the uncertainty.