Middos 1:5 - 1:6

וכמין אכסדרה היה – two walls, one from this side and another from that side of the gate, they would protrude and go out from beyond the wall of he Temple courtyard to the side of the Temple Mount, and there was an upper chambr built from above on top of the two walls.

ופתח היה לו לחיל – in one of the walls there was an opening that would go out to the place within the fortification of the Temple, which is a place inside from the wall of the Temple Mount from outside the Temple courtyard and is called חיל/Khel, [as will be described in further detail in Tractate Middot, Chapter 2, Mishnah 3].

שער הקרבן – there they would bring in the Holy of Holies, whose ritual slaughter was in the north.

בית המוקד – because there were open fires burning there always to warm the Kohanim there because they walk barefoot, it is called, the House of the Hearth. And it was a large house, and in its four corners, there were four small chambers as will be explained further on [in the next Mishnah] (see also Tractate Tamid, Chapter One, Mishnah 1 as well).

כקיטוניות (small rooms/recesses) – like small rooms that open to a large house of kings, which is the reception room.

שתים בקודש ושתים בחול – as the House of the Hearth, part of it is built within the holy Temple courtyard and part of it on the unconsecrated ground.

וראשי פספסין (ends of flag-stones the pavement/blocks on the ceiling; cut and polished stone block) – the heads of beams that come out from the wall until the place which is sanctified, in order to know which is sanctified/holy and which is unconsecrated (i.e., north of the room of the hearth) and to consume Holy Food in sanctity.

לשכת טלאי קרבן – there were there lambs which passed examination for the daily-offerings, as is taught in the Mishnah (see Tractate Arakhin, Chapter 2, Mishnah 5): There should be no less than six examined lambs in the Chamber of the Lambs.”

לשכת עושי לחם הפנים – the House of Garmu would make the shew bread there.

ששקצום מלכי יון – that they offered upon it (i.e., in the northeastern corner) for Idolatrous worship. But in the Tractates Shekalim (see actually Tractate Yoma 15b as the Bar Ilan project has shown me that it is not found in Shekalim at all) and Tamid (see Chapter 3, Mishnah 3), they call it the Chamber of the Seals.

בה יורדין לבית הטבילה – in that chamber, the Kohen would go down when he observed an emission and he would go with pardon [it must say, that is under] the Temple to the House of Immersion, and there is a fire that warms the Kohen after he immersed and came out and dried off, and it is called the Chamber of the Hearth, because it is open to a large House of the Hearth.