Thucydides, History of the Peloponnesian War
Benjamin Jowett, Ed.

33. So Astyochus took five Corinthian ships¹ and a sixth from Megara, one from Hermionè, and² the Lacedaemonian ships which he had brought with him³, and set sail for Miletus in order to assume his command. He threatened the Chians, again and again, that he would certainly not help them when their time of need came. [2] Touching at Corycus in Erythraean he passed the night there. The Athenian ships from Samos were now on their way to Chios; they had put in at a place where they were only divided from the Peloponnesians by a hill, and neither fleet knew that the other was so near. [3] But that night there came a despatch from Pedaritus informing Astyochus that certain Erythraean prisoners had been released by the Athenians from Samos on condition of betraying Erythrae, and had gone thither with that intention. Whereupon Astyochus sailed back to Erythrae. [4] So narrowly did he escape falling into the hands of the Athenians. Pedaritus sailed over to meet him. They then enquired about the supposed traitors, and found that the whole matter was a trick which the men had devised in order to get away from Samos; so they acquitted them of the charge, and Pedaritus returned to Chios, while Astyochus resumed his voyage to Miletus.