Job 2:8
And he took him a potsherd to scrape himself withal; and he sat down among the ashes.
More from Job 2
Again there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them to present himself before the LORD.
And the LORD said unto Satan, From whence comest thou? And Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down
And the LORD said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil? and still he holdeth fast his integrity, although thou movedst me against him, to destroy him without cause.
And Satan answered the LORD, and said, Skin for skin, yea, all that a man hath will he give for his life.
But put forth thine hand now, and touch his bone and his flesh, and he will curse thee to thy face.