Numbers 16:38; Numbers 16:39

38 the censers of the men who sinned at the cost of their lives. Hammer the censers into sheets to overlay the altar, for they were presented before the LORD and have become holy. Let them be a sign to the Israelites.”

39 So Eleazar the priest collected the bronze censers brought by those who had been burned to death, and he had them hammered out to overlay the altar,