History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
And the imputations which at that time were urged against them by the Greeks, both on the score of cowardice in consequence of their disaster in the island, and of their bad management and dilatoriness in other respects, they wiped out by this one action; having been, as was now thought, reduced by fortune, but still the same men at heart.
Now the day before this battle it also happened that the Epidaurians with all their forces invaded the Argive territory, and cut off in great numbers, when they came out to give them battle, those of the Argives who were left behind to keep
guard. Moreover, when three thousand of the Elean heavy-armed had come after the battle to the succour of the Mantineans, and a thousand Athenians in addition to their former force, all these allies at once marched against Epidaurus, while the Lacedaemonians were keeping the Carnea; and dividing the work between them, they began a wall of circumvallation round the
city. And though the rest abandoned the work, the Athenians finished it round the promontory called the Heraeum, the part which had been assigned to them. And having all joined in leaving a garrison in this fortress, they returned to their several cities. And so the summer ended.