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.
The next day, when they were going to advance against Samos, tidings reached them of the arrival of Strombichides with the squadron from the Hellespont, and they immediately sailed back again to Miletus.
The Athenians, when their squadron had joined them, advanced themselves against Miletus with a hundred and eight ships, wishing to come to a decisive battle; but when no one came out to meet them, they sailed back again to Samos.
The same summer, and immediately after this, since the Peloponnesians had not with their whole united fleet offered battle to the enemy, not thinking themselves a match for them, they were at a loss from what quarter to get money for such a number of vessels, especially as Tissaphernes supplied it ill; and therefore they sent Clearchus the son of Ramphias with forty ships to Pharnabazus, in accordance with the original orders from the Peloponnese.