History of the Peloponnesian War

Indeed if instead of the customary close oligarchy there had been a constitutional government in Thessaly, he would never have been able to proceed; since even as it was, he was met on his march at the river Enipeus by certain of the opposite party who forbade his further progress, and complained of his making the attempt without the consent of the nation.

To this his escort answered that they had no intention of taking him through against their will; they were only friends in attendance on an unexpected victor. Brasidas himself added that he came as a friend to Thessaly and its inhabitants; his arms not being directed against them but against the Athenians, with whom he was at war, and that although he knew of no quarrel between the Thessalians and Lacedaemonians to prevent the two nations having access to each other's territory, he neither would nor could proceed against their wishes; he could only beg them not to stop him.