Leviticus 10:8 WEB

⁶  Moses said to Aaron, and to Eleazar and to Ithamar, his sons, 'Don't let the hair of your heads go loose, neither tear your clothes; that you don't die, and that he not be angry with all the congregation: but let your brothers, the whole house of Israel, bewail the burning which Yahweh has kindled.

⁷  You shall not go out from the door of the Tent of Meeting, lest you die; for the anointing oil of Yahweh is on you.' They did according to the word of Moses.

⁸  Yahweh spoke to Aaron, saying,

⁹  'Drink no wine nor strong drink, you, nor your sons with you, when you go into the Tent of Meeting, that you don't die: it shall be a statute forever throughout your generations:

¹⁰  and that you are to make a distinction between the holy and the common, and between the unclean and the clean;