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.
Gylippus and Pythen, after refitting their ships, sailed from Tarentum along the coast to Epizephyrian Locri; and receiving now more positive information that Syracuse was not yet completely invested, but that it was still possible to come with an army and enter it by way of Epipolae, they deliberated whether they should risk sailing into the harbour, keeping Sicily on the right, or, keeping it on the left, should first sail to Himera and then, after having added to their forces the Himeraeans themselves and such others as they might persuade, should proceed overland.
They decided to sail to Himera, especially since the four Athenian ships—which Nicias did after all[*](Nicias had paid little attention to the first reports of the approach of Gylippus, thinking that he was on a privateering mission rather than on one of war (6.104.3).) despatch when he learned that the enemy's ships were at Locri—had not yet arrived at Rhegium. They succeeded in crossing the strait before the arrival of this watch-squadron, and after touching at Rhegium and Messene, arrived at Himera.
While there they persuaded the Himeraeans to help them in the war, not only by going on the expedition themselves, but also by furnishing arms for such of the crews of their ships as had none (for their ships they had beached at Himera), and also sent a request to the Selinuntians to meet them at a certain place with all their forces.