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.
After this the Athenians sailed back to Rhegium, then putting out from there with their whole armament for Catana, on their arrival they set about arranging their camp.
Meanwhile news came from Camarina that if the Athenians would go thither the Camarinaeans would join them, and also that the Syracusans were manning a fleet. Accordingly they proceeded with their whole army along the coast, first to Syracuse; and when they found no fleet was being manned, they again continued along the coast to Camarina and putting to shore sent forward a herald. The Camarinaeans, however, would not receive them, saying that the terms of their oath were to receive the Athenians only if they put in with a single ship, unless they themselves sent for more.
So the Athenians sailed away without accomplishing anything; and after landing at a point in Syracusan territory and making raids, when the Syracusan cavalry had come to the rescue and killed some of their light-armed troops that were straggling they went back to Catana.