History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
Then they too retreated—for it was already getting dark; whereupon the Corinthians put their ships about and broke offthe action.
Thus they separated, the sea-fight ending at nightfall. And while the Corcyraeans were encamping at Leucimne, the twenty ships from Athens, under the command of Glaucon son of Leagrus and Andocides son of Leogoras, having made their way through the corpses and the wrecks, sailed down to the camp not long after they were sighted.
And the Corcyraeans—for it was night—were afraid they were enemies; but afterwards they recognized them and the ships came to anchor.
On the next day the thirty Attic ships and as many of the Corcyraean as were seaworthy put to sea and advanced against the harbour at Sybota, where the Corinthians lay at anchor, wishing to see whether they would fight.
But the Corinthians, although they put out from shore and drew up in line in the open sea, kept quiet: for they had no thought of beginning a fight if they could avoid it as they saw that fresh ships had arrived from Athens and that they themselves were involved in many perplexities, both as regards guarding the captives whom they had in their ships and the impossibility of refitting their ships in a desert place.
What they were more concerned about was the voyage home, how they should get back, for they were afraid that the Athenians would consider that the treaty had been broken, since they had come to blows, and would not let them sail away.
Accordingly they determined to put some men, without a herald's wand,[*](To bear a herald's wand would have been a recognition of a state of war, whereas the Corinthians were anxious not to be regarded as enemies by the Athenians.) into a boat and send them to the Athenians, to test their intentions.