History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
Afterwards, when Brasidas had dismissed the allies to their several cities, he himself went back to Corinth, and prepared for his expedition to Thrace, which was his original destination.
When the Athenians also had returned home, such of the Megareans in the city as had been most implicated in the negotiations with them, knowing that they had been marked, immediately stole away; while the rest, having conferred with the friends of the exiles, restored the party at Pegae, after binding them by solemn oaths to forget the past, and to advise what was best for the city.