Exodus 30:10 WEB

⁸  When Aaron lights the lamps at evening, he shall burn it, a perpetual incense before Yahweh throughout your generations.

⁹  You shall offer no strange incense on it, nor burnt offering, nor meal-offering; and you shall pour no drink-offering on it.

¹⁰  Aaron shall make atonement on its horns once in the year; with the blood of the sin offering of atonement once in the year he shall make atonement for it throughout your generations. It is most holy to Yahweh.'

¹¹  Yahweh spoke to Moses, saying,

¹²  'When you take a census of the children of Israel, according to those who are numbered among them, then each man shall give a ransom for his soul to Yahweh, when you number them; that there be no plague among them when you number them.