History of the Peloponnesian War

And these, though satisfied, stayed behind at first, but afterwards they also went, and sitting down before Orchomenus, jointly besieged and assaulted the same, desiring to take it in as well for other causes as chiefly for that the hostages which the Arcadians had given to the Lacedaemonians were there in custody.

The Orchomenians, fearing the weakness of their walls, and the greatness of the army, and lest they should perish before any relief could arrive, yielded up the town on conditions to be received into the league, give hostages for themselves, and to surrender the hostages held there by the Lacedaemonians into the hands of the Mantineans.