A person who accepts a payment not due, should he have acted in bad faith, must pay the legal interest when money is involved, or for the fruits collected or which ought to have been collected, if the thing received should produce them.\nHe shall furthermore be liable for the impairments the thing may have suffered on account of any cause whatsoever and for the damages caused to the person who delivered it, until he recovers it. He shall not be liable for fortuitous events, when they may have affected the things in the same manner should they have been in the possession of the person who delivered them.\nHistory —Civil Code, 1930, § 1796.
Puerto Rico Legal Code