3.158.1
So when Darius assaulted the whole circuit of the walls, according to the agreed plan, then Zopyrus' treason was fully revealed. For while the townsmen were on the wall defending it against Darius' assault, he opened the gates called Cissian and Belian, and let the Persians inside the walls.
3.158.2
Those Babylonians who saw what he did fled to the temple of that Zeus whom they call Belus; those who had not seen it remained in position, until they too discovered how they had been betrayed.
ch. 159
3.159.1
Thus Babylon was taken a second time, and when Darius was master of the Babylonians, he destroyed their walls and tore away all their gates, neither of which Cyrus had done at the first taking of Babylon; moreover he impaled about three thousand men that were prominent among them; as for the rest, he gave them back their city to live in.
3.159.2
Further, as the Babylonians, fearing for their food, had strangled their own women, as I described above, Darius provided wives to give them a posterity by appointing that each of the neighboring nations should send a certain number of women to Babylon; the sum of the women thus collected was fifty thousand: these were the mothers of those who now inhabit the city.
ch. 160
3.160.1
There never was in Darius' judgment any Persian before or after who did better service than Zopyrus, except Cyrus, with whom no Persian could compare himself. Many times Darius is said to have declared that he would rather Zopyrus were free of disfigurement than have twenty Babylons on top of the one he had.
3.160.2
He honored him very much; every year he sent him such gifts as the Persians hold most precious, and let him govern Babylon all his life with no tribute to pay, giving him many other things besides. This Zopyrus was the father of Megabyzus, who was general of an army in Egypt against the Athenians and their allies; and Megabyzus' son was that Zopyrus who deserted from the Persians to Athens.
