Question

Mr. Santos owns a piece of land in Barangay Victoria. He entered into an agreement with Mr. Cruz to sell the land for Php 5 million. However, before the sale could be completed, a fire broke out and destroyed the property. It was later discovered that the cause of the fire was a faulty electrical wiring installed by Mr. Cruz's contractor, resulting in the total loss of the property.

Mr. Santos demands restitution from Mr. Cruz for the value of the land. On the other hand, Mr. Cruz argues that he should not be held liable for the loss because he was not aware of the faulty electrical wiring and it was beyond his control. In this situation, discuss whether Mr. Santos can claim unjust enrichment and seek restitution from Mr. Cruz based on the provisions of Articles 22-23 and 2142-2143 of the Civil Code.