Exodus 30:38 BBE

³⁶  And put some of it, crushed very small, in front of the ark in the Tent of meeting, where I will come face to face with you; it is to be most holy.

³⁷  You are not to make any perfume like it for yourselves: it is to be kept holy to the Lord.

³⁸  Whoever makes any like it, for its sweet smell, will be cut off from his people.