Exodus 30:35-38
35 and make a fragrant blend of incense, the work of a perfumer. It is to be salted and pure and sacred.
36 Grind some of it to powder and place it in front of the Testimony in the Tent of Meeting, where I will meet with you. It shall be most holy to you.
37 Do not make any incense with this formula for yourselves; consider it holy to the Lord.
38 Whoever makes any like it to enjoy its fragrance must be cut off from his people.”