Ezekiel 42:1, 10, 13

Then he led me out into the outer court, toward the north, and he brought me to the chambers that were opposite the separate yard and opposite the building on the north.

In the thickness of the wall of the court, on the south also, opposite the yard and opposite the building, there were chambers

Then he said to me, “The north chambers and the south chambers opposite the yard are the holy chambers, where the priests who approach the LORD shall eat the most holy offerings. There they shall put the most holy offerings—the grain offering, the sin offering, and the guilt offering—for the place is holy.