Article 1726. When a piece of work has been entrusted to a person by reason of his personal qualifications, the contract is rescinded upon his death. In this case the proprietor shall pay the heirs of the contractor in proportion to the price agreed upon, the value of the part of the work done, and of the materials prepared, provided the latter yield him some benefit. The same rule shall apply if the contractor cannot finish the work due to circumstances beyond his control. (1595) Please, explain this article and give examples. Thanks