Xenophon Hellenica 6.5.33

[33]
  When the Athenians heard of all these things, they ¹ were in a state of concern as to what they should do in regard to the Lacedaemonians, and by resolution of the Senate they called a meeting of the Assembly. Now it chanced that there were present ambassadors of the Lacedaemonians and of the allies who still remained to them. Wherefore the Lacedaemonians spoke — Aracus, Ocyllus, Pharax, Etymocles, and Olontheus — almost all of them saying much the same things. They reminded the Athenians that from all time the two peoples had stood by one another in the most important crises for good ends; for they on their side, they said, had aided in expelling the tyrants ² from Athens, while the Athenians, on the other hand, gave them zealous assistance at the time when they were hard pressed by the Messenians. ³