A vessel measures volume; a stone measures weight. In both cases an identified, usable physical object supplies the standard.
That is not equivalent to saying “whatever amount turns out to be.” Identification reduces potential disagreement at delivery.
Other transactions, especially deferred forward sales, may impose additional conditions. This clause does not resolve every type of exchange.
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Kitab al-Buyu: Grain Sales, Bulk Heaps, Qafiz and Unit Prices
A vessel measures volume; a stone measures weight. In both cases an identified, usable physical object supplies the standard.
That is not equivalent to saying “whatever amount turns out to be.” Identification reduces potential disagreement at delivery.
Other transactions, especially deferred forward sales, may impose additional conditions. This clause does not resolve every type of exchange.