History of the Peloponnesian War

The Athenians, however, knew that they were dismissed, not on the more creditable reason assigned, but from some suspicion having arisen: and considering it hard usage, and not thinking that they deserved to be so treated by the Lacedaemonians, immediately on their return they broke off the alliance which they had made with them against the Mede, and became allies of the Argives, their enemies. The same oaths also were taken, and the same alliance made by both with the Thessalians.

Those in Ithome, in the tenth year, when they could hold out no longer, surrendered to the Lacedaemonians on condition of their going out of the Peloponnese under truce, and never setting foot on it again;

and that if any one were caught doing so, he should be the slave of him who caught him. The Lacedaemonians had also before this a Pythian response made to them,

to let go the suppliant of Jupiter at Ithome.