History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
a longer time. For it was their men they made a special point of recovering, while Brasidas was still in good luck. If he were still further successful and established the contending forces on an even footing, the likelihood was that they would still be deprived of these men, and it would be doubtful whether, fighting on equal terms, they could prevail
with the remainder. Accordingly an armistice was concluded for them and their allies on the following terms:
"Concerning the temple and oracle of the Pythian Apollo, we agree that whosoever will shall consult it without fraud and without fear, according to the usages of our forefathers.