Thucydides, History of the Peloponnesian War
Benjamin Jowett, Ed.

49. During the summer the Olympic games were celebrated, the Olympiad being that in which Androsthenes,¹ an Arcadian, won his first victory in the pancratium. The Lacedaemonians were excluded from the temple by the Eleans, and so could neither sacrifice nor contend in the games. For they had refused to pay the fine which, according to Olympic law, the Eleans had imposed upon them, alleging that they had brought an armed force against the fortress of Phyrcus, and had introduced some hoplites of their own into Lepreum during the Olympic truce. The fine amounted to two thousand minae², being two minae³ for each hoplite, which is the penalty imposed by the law. [2] The Lacedaemonians sent envoys who argued that the sentence was unjust, for at the time when their troops entered Lepreum the truce had not been announced at Lacedaemon. [3] The Eleans replied that the truce (which they always proclaim first to themselves) had already begun with them, and that while they were quietly observing the truce, and expecting nothing less, the Lacedaemonians had treacherously attacked them. [4] The Lacedaemonians rejoined by asking why the Eleans proclaimed the truce at all at Lacedaemon if they considered them to have broken it already-they could not really have thought so when they made the proclamation; and from the moment when the announcement reached Lacedaemon all hostilities had ceased. [5] The Eleans were still positive that the Lacedaemonians were in the wrong, and said that they would never be persuaded of the contrary. But if the Lacedaemonians were willing to restore Lepreum to them, they offered to remit their own share of the penalty, and pay on their behalf that part which was due to the God.