Exodus 30:37 WEB

³⁵  and you shall make incense of it, a perfume after the art of the perfumer, seasoned with salt, pure and holy:

³⁶  and you shall beat some of it very small, and put some of it before the testimony in the tent of meeting, where I will meet with you. It shall be to you most holy.

³⁷  The incense which you shall make, according to its composition you shall not make for yourselves: it shall be to you holy for Yahweh.

³⁸  Whoever shall make any like that, to smell of it, he shall be cut off from his people.'