2 Samuel 13:34

Absalom fled He was now as much afraid of the king's sons as they were of him; they fled from his malice, he from their justice. No part of the land of Israel could shelter him; the cities of refuge afforded no protection to a wilful murderer. Though David had let Amnon's incest go unpunished, Absalom could not promise himself his pardon for this murder. He therefore made the best of his way to his mother's relations, and was entertained and protected by his grandfather Talmai three years; David not demanding him, and Talmai not thinking himself obliged to send him back unless he were demanded.