Leviticus 10:2-4

New Century Version

² So fire came down from the Lord and destroyed Nadab and Abihu, and they died in front of the Lord. ³ Then Moses said to Aaron, “This is what the Lord was speaking about when he said,

So Aaron did not say anything about the death of his sons.

⁴ Aaron’s uncle Uzziel had two sons named Mishael and Elzaphan. Moses said to them, “Come here and pick up your cousins’ bodies. Carry them outside the camp away from the front of the Holy Place.”