ومن اشترى مكيلا مكايلة أو موزونا موازنة
Translation: And whoever buys measured goods by measure or weighed goods by weight.
Measured goods are sold by a prescribed capacity measure in the transaction; weighed goods are sold by weight, such as kilograms.
Quduri addresses a case where the original purchase and the onward sale are both specified through measurement or weighing. It is a particular delivery-and-quantification problem, not a blanket assertion that every kind of item must always be measured again.