The Histories · 3.56

The Lacedemonians then, when they had been besieging Samos for forty days and their affairs made no progress, set forth to return to Peloponnesus. But according to the less credible account which has been put abroad of these matters Polycrates struck in lead a quantity of a certain native coin, and having gilded the coins over, gave them to the Lacedemonians, and they received them and upon that set forth to depart. This was the first expedition which the Lacedemonians (being Dorians) made into Asia.

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
Source edition
Passage preview. Read in context for the complete text, notes and references.