History of the Peloponnesian War

But the Chians and Erythraeans, they also desiring to revolt, went not to Agis, but to the Lacedaemonians in the city; and with them went also an ambassador from Tissaphernes, lieutenant to king Darius in the low countries of Asia. For Tissaphernes also instigated the Peloponnesians and promised to pay their fleet.

For he had lately begged of the king the tribute accruing in his own province; for which he was in arrearage, because he could receive nothing out of any of the Greek cities by reason of the Athenians. And therefore he thought by weakening the Athenians to receive his tribute the better, and withal to draw the Lacedaemonians into a league with the king; and thereby, as the king had commanded, to kill or take alive Amorges, Pissuthnes' bastard son, who was in rebellion against him about Caria. The Chians, therefore, and Tissaphernes followed this business jointly.

Calligeitus, the son of Laophon, a Magarean, and Timagoras the son of Athenagoras, a Cyzicene, both banished their own cities and abiding with Pharnabazus, the son of Pharnaces, came also about the same time to Lacedaemon, sent by Pharnabazus to procure a fleet for the Hellespont, that he also, if he could, might cause the Athenian cities in his province to revolt for his tribute's sake, and be the first to draw the Lacedaemonians into league with the king, just the same things that were desired before by Tissaphernes.

Now Pharnabazus and Tissaphernes treating apart, there was great canvassing at Lacedaemon between the one side that persuaded to send to lonia and Chios and the other that would have the army and fleet go first into the Hellespont. But the Lacedaemonians indeed approved best by much of the business of the Chians and of Tissaphernes.