Leviticus 10:8-10

Young's Literal Translation

⁸ And Jehovah speaketh unto Aaron, saying,

⁹ `Wine and strong drink thou dost not drink, thou, and thy sons with thee, in your going in unto the tent of meeting, and ye die not -- a statute age-during to your generations;

¹⁰ so as to make a separation between the holy and the common, and between the unclean and the pure;