Leviticus 10:6, 12

Then Moses said to Aaron and his other sons, Eleazar and Ithamar, “Don’t show sadness by tearing your clothes or leaving your hair uncombed. If you do, you will die, and the LORD will be angry with all the people. All the people of Israel, your relatives, may cry loudly about the LORD burning Nadab and Abihu

Moses said to Aaron and his remaining sons, Eleazar and Ithamar, “Eat the part of the grain offering that is left from the sacrifices offered by fire to the LORD, but do not add yeast to it. Eat it near the altar because it is most holy.