The World Federation One Stop Fiqh

Ruling 2212

If a person hires an animal or vehicle and specifies how much load he will place on it, in the event that he loads more than that amount and the animal or vehicle perishes or becomes defective, he is responsible for it. The same applies if he does not specify the load but places a load on it that is more than normal. In both cases, he must also pay a greater rental fee than normal.