History of the Peloponnesian War

In the tenth year[*](455 B.C.) the rebels on Ithome found that they could hold out no longer and surrendered to the Lacedaemonians on condition that they should leave the Peloponnesus under a truce and should never set foot in it again;

and if any of them should be caught there, he was to be a slave of his captor.

Moreover, before this time the Lacedaemonians also received a Pythian oracle, which bade them let go the suppliant of Ithomean Zeus. So the Messenians left the Peloponnesus, themselves and their children and wives; and the Athenians received them, in consequence of the enmity to the Lacedaemonians already existing, and settled them at Naupactus, which they happened to have lately taken from its possessors, the Ozolian Locrians.

And the Megarians also entered into alliance with the Athenians, revolting from the Lacedaemonians because the Corinthians were pressing them hard in a war about boundaries; and thus the Athenians secured Megara and Pegae,[*](Pegae was the Megarian harbour on the Corinthian gulf: Nisaea, a nearer one, on the Saronic gulf.) and they built for the Megarians the long walls which run from the city to Nisaea and held it with a garrison of their own troops. And it was chiefly because of this act that the vehement hatred of the Corinthians for the Athenians first arose.