מדרש אויף מיכה 7:11

"And the southern corner, five five hundred and four thousand" (Ezekiel 48:16) is written. Learn from this that five hundred additional were added in an allusive line, as the scripture said, "And these are its measurements" (Ezekiel 48:9), and gave a rule and line and measure for the Third Temple, for its fields and its suburbs and its exteriors and interiors, and set out children to repent. And thus it says, "You, mortal, tell the house of Israel of the house, and they will be ashamed with their iniquities" (Ezekiel 43:10), and "And if they are ashamed from all they did" (Ezekiel 43:11), then all this honor is due to them, and haShem can give more than this, five by five to a thousand by a thousand. And thus it says, "A day to build up your fences, that rule is extended" (Micah 7:11), and it says, "That day, and to you he will come" (Micah 7:12). Thus "five five" is written — may the Master of Mercies say it, amen!