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.

They first tried to persuade a few of the men on the island to run away, by secretly sending thither friends who were instructed to say, with a show of good will, that the best course for them was to do this with no loss of time, and promising to have a boat ready; for the Athenian generals, they explained, were intending to deliver them up to the Corcyraean populace.

And when the men had been persuaded, and were caught sailing away in the boat which the others had provided. the truce was broken and the whole party was delivered up to the Corcyraeans.