Exodus 30:7-10

7And Aaron shall burn thereon incense of sweet spices: every morning, when he dresseth the lamps, he shall burn it. 8And when Aaron lighteth the lamps at even, he shall burn it, a perpetual incense before Jehovah throughout your generations. 9Ye shall offer no strange incense thereon, nor burnt-offering, nor meal-offering; and ye shall pour no drink-offering thereon. 10And Aaron shall make atonement upon the horns of it once in the year; with the blood of the sin-offering of atonement once in the year shall he make atonement for it throughout your generations: it is most holy unto Jehovah.