Xenophon's Anabasis (Cambridge, Trinity College, MS R.9.29)

concealing it so that he might take the King as unprepared as possible. When he was making his collection of troops, he instructed the commanders of the garrisons in each of the cities to recruit as many and as good Peloponnesian men as possible, under the pretext that Tissaphernes was plotting against the cities. For the Ionian cities had originally belonged to Tissaphernes, having been given to him, but at that time they had all defected to Cyrus except for Miletus. In Miletus, Tissaphernes, having perceived that the people there were planning to defect to Cyrus for these same reasons, killed some and exiled others. Cyrus received the fugitives, collected an army, and besieged Miletus by land and sea, attempting to restore the exiles. This, therefore, was another pretext for him to gather an army.

Furthermore, by sending to the King, he requested that, as the King's brother, these cities should be given to him rather than Tissaphernes ruling them. His mother cooperated with him in this, so that the King did not perceive the plot against himself. The King thought that Cyrus was spending money on his armies while fighting Tissaphernes, so he was not at all distressed by their fighting. Indeed, Cyrus continued to send the King the regular tributes from the cities that Tissaphernes had been holding. Another army was being collected for him in the Chersonese, opposite Abydos, in the following manner: Clearchus, a Lacedaemonian, was an exile. Cyrus met him, admired him, and gave him ten thousand darics Persian gold coins. Clearchus, taking the gold, collected an army with these funds, and conducted his warfare from the Chersonese,