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.
Such then was the course of the battle, which lasted till sunset.
The Corcyraeans, fearing that the enemy, confident of victory, might sail against the city and either take on board the prisoners on the island or commit some other act of violence, transferred these prisoners once more to the temple of Hera and then took measures to protect the city.
The Peloponnesians, however, although they were the victors in the naval battle, did not venture to attack the city, but with thirteen Corcyraean ships which they had taken sailed back to the harbour on the mainland from which they had set out.