First, in case of renting one’s animal to others (lease),...

First, in case of renting one’s animal to others (lease), the owner is not allowed to agree that the renter can overload the animal.[^15] Second, the user of the animal is not allowed to change the type or amount of loads being transported by the animal by changing the content of the lease contract, causing torment to the animal.[^16] Furthermore, the load should be positioned on the back of the animal in a way that it may not cause any injury to it.

A caravan of camels was passing by Imam al-Sadiq (A.S.). He saw a camel whose load was tilted; he said, “O young boy! Do justice to this animal, because Allah loves justice.”[^17] The Holy Prophet (S.A.W.) said, “Place the loads on the rear part of the animal‘s back, because the two hands [front legs] are suspended (loose) and the two feet [hind legs] are firm.”[^18] 3.1.

The Amount and Speed of Movement : according to the religious doctrines, two factors have to be taken into consideration in determining the amount and speed of the movements of animals such as horses and camels. 1.3.1. The Quality of the Track on which to Move : the one who uses an animal for travelling has to be careful not to cause any harm to the animal in this way; thus, he is obliged to choose the easiest path for it to move on.

Once any one of you rides an animal, take it through smooth roads. [^19] 2.3.1. Speed of Movement : also, the animal’s speed should be chosen proportionate to the quality of the path (road).[^20] When you are travelling on a verdant land, give the camel a chance to graze; and when you are travelling in a dry and arid land, pick up your speed before the animal becomes restless with the roughness of the path.

And when the night falls, stop moving on, because during the night the predators and creepers move on the way [and may be harmed as you are moving on].[^21] God loves tolerance and helps practicing it.