Job 2:8 in the World English Bible
He took for himself a potsherd to scrape himself with, and he sat among the ashes.
Context
7 So went Satan forth from the presence of the LORD, and smote Job with sore boils from the sole of his foot unto his crown.
8 And he took him a potsherd to scrape himself withal; and he sat down among the ashes.
9 Then said his wife unto him, Dost thou still retain thine integrity? curse God, and die.