'Earth Upon His Head' in the Bible

And there ran a man of Benjamin out of the battle, and came to Shiloh the same day, with his clothes rent and with earth upon his head.

And it came to pass on the third day, that behold, a man came out of the camp from Saul with his garments rent, and earth upon his head; and as soon as he came to David, he fell to the earth and did obeisance.

And it came to pass, when David had come to the summit, where he worshipped God, that behold, Hushai the Archite came to meet him with his coat rent, and earth upon his head.