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.
When the Peloponnesians in Attica heard of the occupation of Pylus, they returned home with all speed; for the Lacedaemonians and Agis their king thought that the affair of Pylus closely affected them; and, besides, having made their incursion early in the season, and while the corn was still green, they were in want of provisions for most of their troops; while stormy weather, coming on with greater violence than was usual at that season, distressed the army.