Leviticus 10:6-7

6And Moses said unto Aaron, and unto Eleazar and unto Ithamar, his sons, Let not the hair of your heads go loose, neither rend your clothes; that ye die not, and that he be not wroth with all the congregation: but let your brethren, the whole house of Israel, bewail the burning which Jehovah hath kindled. 7And ye shall not go out from the door of the tent of meeting, lest ye die; for the anointing oil of Jehovah is upon you. And they did according to the word of Moses.