Anabasis

After this two generals went forth from the Greek lines under guard, Cleanor the Orchomenian and Sophaenetus the Stymphalian, and with them Xenophon the Athenian, who wished to learn the fate of Proxenus; Cheirisophus, however, chanced to be away in a village in company with others who were getting provisions.

And when the Greeks got within hearing distance, Ariaeus said: Clearchus, men of Greece, inasmuch as he was shown to be perjuring himself and violating the truce, has received his deserts and is dead, but Proxenus and Menon, because they gave information about his plotting, are held in high honour. For yourselves, the King demands your arms; for he says that they belong to him, since they belonged to Cyrus, his slave.