Exodus 30:6-8

6“You are to put it in front of the curtain that is before the ark of the testimony (before the atonement lid that is over the testimony), where I will meet you.

7Aaron is to burn sweet incense on it morning by morning; when he attends to the lamps he is to burn incense.

8When Aaron sets up the lamps around sundown he is to burn incense on it; it is to be a regular incense offering before the Lord throughout your generations.