Leviticus 10:7-9

Living Bible

⁷ But you are not to leave the Tabernacle under penalty of death, for the anointing oil of Jehovah is upon you.” And they did as Moses commanded.

^8-9 Now the Lord instructed Aaron, “Never drink wine or strong drink when you go into the Tabernacle, lest you die; and this rule applies to your sons and to all your descendants from generation to generation.