Strabo, Geography

Now this is the account which some writers give of the Sacae. Others say that Cyrus made an expedition against the Sacae, was defeated in the battle, and fled; but that he encamped in the place where he had left behind his supplies, which consisted of an abundance of everything and especially of wine, rested his army a short time, and set out at nightfall, as though he were in flight, leaving the tents full of supplies; and that he proceeded as far as he thought best and halted; and that the Sacae pursued, found the camp empty of men but full of things conducive to enjoyment, and filled themselves to the full; and that Cyrus turned back, and found them drunk and crazed, so that some were slain while lying stupefied and asleep, whereas others fell victims to the arms of the enemy while dancing and revelling naked, and almost all perished; and Cyrus, regarding the happy issue as of divine origin, consecrated that day to the goddess of his fathers and called it Sacaea; and that wherever there is a temple of this goddess, there the festival of the Sacaea, a kind of Bacchic festival, is the custom, at which men, dressed in the Scythian garb, pass day and night drinking and playing wantonly with one another, and also with the women who drink with them.