Ezra 6:1-3

Then Darius the king made a decree, and search was made in the house of the rolls, where the treasures were laid up in Babylon.

And there was found at Achmetha, in the palace that is in the province of the Medes, a roll, and therein was a record thus written:

In the first year of Cyrus the king the same Cyrus the king made a decree concerning the house of God at Jerusalem, Let the house be builded, the place where they offered sacrifices, and let the foundations thereof be strongly laid; the height thereof threescore cubits, and the breadth thereof threescore cubits;