Exodus 30:9-11

New Revised Standard Version Catholic Edition

⁹ You shall not offer unholy incense on it, or a burnt offering, or a grain offering; and you shall not pour a drink offering on it. ¹⁰ Once a year Aaron shall perform the rite of atonement on its horns. Throughout your generations he shall perform the atonement for it once a year with the blood of the atoning sin offering. It is most holy to the Lord.

The Half Shekel for the Sanctuary

¹¹ The Lord spoke to Moses: