A person tells A to sell a certain thing to B and informs A he will pay him in the event of B failing to do so, and B does in fact fail so to do. The person making the promise is obliged to pay the money. An animal is returned by reason of an option for defect. The vendor may not charge any fee on account of the use of the animal, because if it had been fallen upon the purchaser. Remuneration and liability to make good loss do not run together.
Disadvantage is an obligation accompanying enjoyment.
That is to say, a person who enjoys a thing must submit to the disadvantages attaching thereto. The burden is in proportion to the benefit and the benefit to the burden. If a person performs any act personally and is implicated therein with the person who is the cause thereof, the person performing such act is responsible thereof. B is responsible thereof and no liability rests with the person who dug the well. An act allowed by law cannot be made the subject of a claim to compensation.