Ezekiel 42:17 Midrash

מָדַ֖ד ר֣וּחַ הַצָּפ֑וֹן חֲמֵשׁ־מֵא֥וֹת קָנִ֛ים בִּקְנֵ֥ה הַמִּדָּ֖ה סָבִֽיב׃

He measured the north side, five hundred reeds, with the measuring reed round about.

Read midrashic interpretation of Ezekiel 42:17: and classical rabbinic exegesis.