Numbers 16:36-40

36(17:1) The Lord spoke to Moses:

37“Tell Eleazar son of Aaron the priest to pick up the censers out of the flame, for they are holy, and then scatter the coals of fire at a distance.

38As for the censers of these men who sinned at the cost of their lives, they must be made into hammered sheets for covering the altar, because they presented them before the Lord and sanctified them. They will become a sign to the Israelites.”

39So Eleazar the priest took the bronze censers presented by those who had been burned up, and they were hammered out as a covering for the altar.

40It was a memorial for the Israelites, that no outsider who is not a descendant of Aaron should approach to burn incense before the Lord, that he might not become like Korah and his company – just as the Lord had spoken by the authority of Moses.