وإن وجدها أكثر فالزيادة للبائع
Translation: If the heap is found to contain more, the surplus belongs to the seller.
The sale covered 100 qafiz, but the heap measures 115. Only 100 were contracted for; the additional 15 were not sold.
An observable physical surplus is not automatically a free bonus. Where the commodity is sold in divisible, measured units, the excess units remain with the seller.