What is the ruling on agreeing with a person that he works on a car for a known fare, with the intention of giving him what he deserves if he is unable to collect the agreed upon amount, and what is the ruling on agreeing that he gets one-third of the fare and the car owner gets two-thirds?

The first method (leasing) is permissible, whereby the car is leased to the worker for a specified amount, and the rulings of leasing apply to it, such as maintenance and guarantee. The worker pays the rent regardless of whether he works, profits, or loses.

The second method (giving the worker a share of the profit) is permissible according to the Hanbalis, by analogy with Musaqah (watering contract) and Muzara'ah (agricultural contract). They argued that it is an asset that grows through work, so the contract regarding a share of its growth is valid, just like with dirhams, trees, and land.