Deuteronomy 9:17-21

17And I took hold of the two tables, and cast them out of my two hands, and brake them before your eyes. 18And I fell down before Jehovah, as at the first, forty days and forty nights; I did neither eat bread nor drink water; because of all your sin which ye sinned, in doing that which was evil in the sight of Jehovah, to provoke him to anger. 19For I was afraid of the anger and hot displeasure, wherewith Jehovah was wroth against you to destroy you. But Jehovah hearkened unto me that time also. 20And Jehovah was very angry with Aaron to destroy him: and I prayed for Aaron also at the same time. 21And I took your sin, the calf which ye had made, and burnt it with fire, and stamped it, grinding it very small, until it was as fine as dust: and I cast the dust thereof into the brook that descended out of the mount.