History of the Peloponnesian War

But the Athenians, perceiving that they were not sent away upon good cause but only as men suspected, made it a heinous matter, and conceiving that they had better deserved at the Lacedaemonians' hands, as soon as they were gone left the league which they had made with the Lacedaemonians against the Persian and became confederates with their enemies the Argives; and then both Argives and Athenians took the same oath and made the same league with the Thessalians.

Those in Ithome, when they could no longer hold out, in the tenth year of the siege rendered the place to the Lacedaemonians upon condition of security to depart out of Peloponnesus and that they should no more return, and whosoever should be taken returning to be the slave of him that should take him.

For the Lacedaemonians had before been warned by a certain answer of the Pythian oracle to let go the suppliant of Jupiter Ithometes.