The largest building in the Azarah was the Heichal, which will be discussed later. The second largest was the Hearth. This dome-covered structure was the sleeping quarters for the priests who performed the services.
Most authorities say that it was half inside the Azarah and half outside. It had four rooms connected with the structure.
Some say that the side rooms were outside the building. Others say that the four side rooms were inside the building, one room in each corner.
The Hearth itself served as a dormitory. The walls were lined with great stone steps. Some sources say the priests slept on these steps, while others maintain that the sleeping quarters were built into the wall, like cubicles or coops.
The priest would climb the steps to their respective cubicles. the elder priests slept above, and the younger ones slept on the floor.
In the middle of the floor was a tile one cubit by one cubit. Itr could be raised by lifting a hoop set into it. Undeneath was a chain, to which were attached the keys to the gates.
One of the priestly officials would take the keys after the Temple doors were locked at night, pladce them on the chain, and sleep atop the tile.
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Four rooms were connected to the Hearth:
Lishkat Lechem Hapanim - Chamber of the Showbread
The twelve "showbreads" used for the Shulchan were baked here every Friday. On Shabbat the new showbreads replaced the older ones which were later eaten by the Kohanim in this room.
Lishkat HaChosamos - The receipt chamber
When one needed oil, wine, or flour for his sacrifice, he purchased special tokens ("receipts") in this chamber. With these tokens he would pick up his order from the chamber of oils.
This room also contained the stones of the Mizbe'ach defiled by the Greeks.
Lishkat Hatela'im - The sheep chamber
This chamber was used as a barn for the sheep offered as offered as "daily sacrifices". The sheep were checked for blemishes and imperfections twice a day, for a four-day period prior to being sacrificed
Lishkat Beis Hamoked - the Hearth Chamber
This was a chamber that led to another hearth underground used by Kohanim who were not ritually pure. A Mikvah (ritual bath) and restrooms were also located in this underground chamber.