Numbers 16:39-40

ECB(i) 39 And El Azar the priest takes the copper trays, with which they who were burnt had oblated; and they expanded them to overlay the sacrifice altar 40 - a memorial to the sons of Yisra El; so that any man - stranger, not of the seed of Aharon, approaches not to offer incense at the face of Yah Veh; that he become not as Qorach and as his witness: as Yah Veh worded to him by the hand of Mosheh.