Case 1: “This entire visible heap for 5,000 rupees.” A fixed lump-sum bulk sale.
Case 2: “This entire heap at 500 rupees per qafiz,” without stating its size. Its total price depends on the unknown number of qafiz.
The same physical pile can be governed by different rules because the price formula—and the remaining uncertainty—is different.
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Kitab al-Buyu: Grain Sales, Bulk Heaps, Qafiz and Unit Prices
Case 1: “This entire visible heap for 5,000 rupees.” A fixed lump-sum bulk sale.
Case 2: “This entire heap at 500 rupees per qafiz,” without stating its size. Its total price depends on the unknown number of qafiz.
The same physical pile can be governed by different rules because the price formula—and the remaining uncertainty—is different.