2 Samuel 15:30

15:30 As David was going up the Mount of Olives, he was weeping as he went; his head was covered and his feet were bare. All the people who were with him also had their heads covered and were weeping as they went up.

2 Samuel 15:32

15:32 When David reached the summit, where he used to worship God, Hushai the Arkite met him with his clothes torn and dirt on his head.