History of the Peloponnesian War

For they had been advertised that there was a holiday of Apollo Maloeis to be kept without the city and that to the celebration thereof the Mytilenaeans were accustomed to come all out of the town; and they hoped, making haste, to take them there unawares. And if the attempt succeeded, it was well; if not, they might command the Mytilenaeans to deliver up their galleys and to demolish their walls; or they might make war against them if they refused.

So these galleys went their way. And ten galleys of Mytilene which then chanced to be at Athens, by virtue of their league to aid them, the Athenians stayed and cast into prison the men that were in them.