Exodus 30:6-9

And thou shalt put it before the veil that is by the ark of the testimony, before the mercy-seat that is over the testimony, where I will meet with thee. And Aaron shall burn thereon incense of sweet spices: every morning, when he dresseth the lamps, he shall burn it. And when Aaron lighteth the lamps at even, he shall burn it, a perpetual incense before Jehovah throughout your generations. Ye shall offer no strange incense thereon, nor burnt-offering, nor meal-offering; and ye shall pour no drink-offering thereon.