History of the Peloponnesian War

Aristarchus, therefore, having treated with these, deceived those in Oenoe and told them that the city of Athens had compounded with the Lacedaemonians and that they were to render up the place to the Boeotians, for that it was so conditioned in the agreement. Whereupon, believing him as one that had authority over the soldiery and knowing nothing because besieged, upon security for their pass they gave up the fort.