Exodus 30:6-9

And you shall put it before the veil that is before the ark of the Testimony, before the mercy seat that is over the Testimony, where I will meet with you. “Aaron shall burn on it sweet incense every morning; when he tends the lamps, he shall burn incense on it. And when Aaron lights the lamps at twilight, he shall burn incense on it, a perpetual incense before the LORD throughout your generations. You shall not offer strange incense on it, or a burnt offering, or a grain offering; nor shall you pour a drink offering on it.