Midrash for Zechariah 2:6

R. Chanina b. Papa said: "The Lord wanted to make a size for Jerusalem, as it is said (Zech. 2, 6) To measure Jerusalem. And the angels said before the Holy One! praised be He: 'Sovereign of the Universe, there are many great cities that Thou hast created in Thy world, belonging to other nations, of which Thou hast not determined their length and their breadth. For Jerusalem, upon which Thy name rests, where Thy Temple is, where the righteous dwell, shalt Thou determine a measure.' Immediately following the passage reads (Ib. 8) And He said unto him, 'Run, speak to this young man, saying, Without walls shall Jerusalem be inhabited, because of the multitude of men and cattle in her midst.'"