מָדַ֛ד ר֥וּחַ הַקָּדִ֖ים בִּקְנֵ֣ה הַמִּדָּ֑ה חֲמֵשׁ־אמות [מֵא֥וֹת] קָנִ֛ים בִּקְנֵ֥ה הַמִּדָּ֖ה סָבִֽיב׃
他用量度的竿量東面，用量度的竿量，四周共五百竿。
Rashi
And with this measurement [lit. from this measurement.] With the measuring rod by which the 500 by 500 square of the Temple Mount was measured, as is stated above (42:20): “To four sides he measured it; its wall all around, five hundred rods, etc.”