Chapter I: The nature and form of the sale.

If the promise to sell was made with deposits each of the contracting parties is master to dispose of them, He who gave them, by losing them, And he who received them, by returning double.

The sale price must be determined and designated by the parties.

It may, however, be left to the estimate of a third party; if the third party is unwilling or unable to make the estimate, there is no sale, unless the estimate is made by another third party.

The costs of deeds and other accessories to the sale are payable by the buyer.