Both attributes: wheat × wheat — equal quantities required; delay forbidden.
One attribute: wheat × barley — unequal quantities may be allowed; delay forbidden.
Neither attribute: cloth × wheat — this particular cause requires neither equality nor prompt exchange.
The classification assumes that the legal genus and governing measure of each item have been correctly identified. General contract requirements and specialized monetary-exchange rules are additional considerations.
Opening interactive controls...
Riba: Operative Causes, Unequal Exchange and Deferral
Both attributes: wheat × wheat — equal quantities required; delay forbidden.
One attribute: wheat × barley — unequal quantities may be allowed; delay forbidden.
Neither attribute: cloth × wheat — this particular cause requires neither equality nor prompt exchange.
The classification assumes that the legal genus and governing measure of each item have been correctly identified. General contract requirements and specialized monetary-exchange rules are additional considerations.