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.
Cleon and the Athenians set up two trophies, one at the harbour, the other at the new wall, and made slaves of the women and children of the Toronaeans, but the men of Torone along with the Peloponnesians, and any that were Chalcidians, all together to the number of seven hundred, they sent to Athens. There, however, the Peloponnesians were afterwards set free in the treaty that was made, but the rest were brought back by the Olynthians, being ransomed man for man.[*](ie. in exchange for Athenian prisoners.)
About the same time Panactum, a fortress on the frontier of Attica, was betrayed to the Boeotians.
As for Cleon, after setting a guard over Torone, he weighed anchor and sailed round Athos with a view to attacking Amphipolis.