History of the Peloponnesian War

But the Athenians, aware that their dismissal did not proceed from the more honorable reason of the two, but from suspicions which had been conceived, went away deeply offended, and conscious of having done nothing to merit such treatment from the Lacedaemonians; and the instant that they returned home they broke off the alliance which had been made against the Mede, and allied themselves with Sparta's enemy Argos; each of the contracting parties taking the same oaths and making the same alliance with the Thessalians.

Meanwhile the rebels in Ithome, unable to prolong further a ten years' resistance, surrendered to Lacedaemon; the conditions being that they should depart from Peloponnese under safe conduct, and should never set foot in it again:

any one who might hereafter be found there was to be the slave of his captor. It must be known that the Lacedaemonians had an old oracle from Delphi, to the effect that they should let go the suppliant of Zeus at Ithome.