ומתחתה לשכות [וּמִתַּ֖חַת] [הַלְּשָׁכ֣וֹת] הָאֵ֑לֶּה המבוא [הַמֵּבִיא֙] מֵֽהַקָּדִ֔ים בְּבֹא֣וֹ לָהֵ֔נָּה מֵֽהֶחָצֵ֖ר הַחִצֹנָֽה׃
And from under these chambers was the entry on the east side, as one goeth into them from the outer court.
Read midrashic interpretation of Ezekiel 42:9: and classical rabbinic exegesis.