Ezekiel 42:13-14

13Then the man said to me, “The northern and southern side rooms that face the open area are holy rooms. These rooms are where the priests who come near the Lord eat the holiest offerings. Because these rooms are holy, the priests keep the holiest offerings there: the grain offerings, the offerings for sin, and the guilt offerings.

14Once the priests enter the holy place, they must not go out of the holy place into the outer courtyard until they leave behind the clothes that they wore as they served. These clothes are holy. The priests must put on other clothes. Then they can go into the area that is for the people.”