to whatever of food is ordinarily sold by count, weight, or measure—whether it be a staple or a condiment—for such goods are fully visible to the eye, the scope for uncertainty is small, and any excess or shortfall is slight. Selling by rough estimate is therefore allowed only when the purchaser can survey the commodity outwardly; if he later finds that the inside or bottom layer differs from the top and wishes to return it, he has that right.

It is permissible to sell small fish in bulk, and the same applies to bundles of firewood, but large fish or sizable logs may not be sold that way. They also deemed it reprehensible to buy something that is normally sold by measure or weight by simply purchasing its container or vessel; however, if that sack or vessel is present with the seller and already filled, the transaction is valid.

According to Ibn al-Qāsim, it is impermissible to combine, in a single contract, a measured quantity with an unmeasured bulk. For instance, one may not sell a heap of wheat together with ten aradib of barley in one sale. The same rule covers every item that is counted, weighed, or measured in bulk when it is joined to something specifically measured or weighed—whether by volume, weight, or number—in a single bargain. Likewise, if such goods are sold by measure or weight together with merchandise in one contract, the sale is invalid.