Histories
Herodotus
Herodotus. Godley, Alfred Denis, translator. Cambridge, MA; London: Harvard University Press; William Heinemann, Ltd., 1920-1925 (printing).
Presently the whole Greek army was arrayed as I will show, both the later and the earliest comers. On the right wing were ten thousand Lacedaemonians; five thousand of these, who were Spartans, had a guard of thirty-five thousand light-armed helots, seven appointed for each man.
The Spartans chose the Tegeans for their neighbors in the battle, both to do them honor, and for their valor; there were of these fifteen hundred men-at-arms. Next to these in the line were five thousand Corinthians, at whose desire Pausanias permitted the three hundred Potidaeans from +Pallene [23.8833,38.05] (Perseus) Pallene then present to stand by them.