Exodus 30:7-10

7And Aaron shall burn fragrant incense on it. Every morning when he dresses the lamps he shall burn it, 8and when Aaron sets up the lamps at twilight, he shall burn it, a regular incense offering before the LORD throughout your generations. 9You shall not offer unauthorized incense on it, or a burnt offering, or a grain offering, and you shall not pour a drink offering on it. 10Aaron shall make atonement on its horns once a year. With the blood of the sin offering of atonement he shall make atonement for it once in the year throughout your generations. It is most holy to the LORD.”