What does 2 Samuel 15:32 mean?

When David reached the top of the hill where people worshiped God, Hushai the Arkite met him. His clothes were torn and he had dirt on his head, showing his grief. 2 Samuel 15:32 - Modern Text Bible

(Hushai, a loyal friend, meets David in mourning. The torn clothes and dirt are signs of deep sadness and solidarity with David's suffering.)