History of the Peloponnesian War

For a small force of Lacedaemonians happened too, just at the time when they were in commotion on these subjects, to have advanced as far as the Isthmus, in pursuance of some scheme with the Boeotians. They thought therefore that it had come by agreement, through his agency, and not on account of the Boeotians; and that if they had not, in consequence of the information they had received, been beforehand in the arrest of the party, the city would have been betrayed to them.

One night indeed they even slept in arms in the temple of Theseus within the walls. The friends, too, of Alcibiades at Argos were at the same time suspected of a design to attack the popular government; and those persons of the Argives who had been deposited in the islands the Athenians on that occasion gave up to the Argive commons to put to death on that account.