Passage 5.26.1
Μεσσηνίων δὲ τῶν Δωριέων οἱ Ναύπακτόν ποτε παρὰ Ἀθηναίων λαβόντες ἄγαλμα ἐν Ὀλυμπίᾳ Νίκης ἐπὶ τῷ κίονι ἀνέθεσαν· τοῦτό ἐστιν ἔργον μὲν Μενδαίου Παιωνίου , πεποίηται δὲ ἀπὸ ἀνδρῶν πολεμίων, ὅτε Ἀκαρνᾶσι καὶ Οἰνιάδαις ἐμοὶ δοκεῖν ἐπολέμησαν. Μεσσήνιοι δὲ αὐτοὶ λέγουσι τὸ ἀνάθημά σφισιν ἀπὸ τοῦ ἔργου τοῦ ἐν τῇ Σφακτηρίᾳ νήσῳ μετὰ Ἀθηναίων πραχθέντος εἶναι , καὶ οὐκ ἐπιγράψαι τὸ ὄνομα τῶν πολεμίων σφᾶς τῷ ἀπὸ Λακεδαιμονίων δείματι, ἐπεὶ Οἰνιαδῶν γε καὶ Ἀκαρνάνων οὐδένα ἔχειν φόβον.
The Messenians, who are Dorians, once received Naupactus from the Athenians, and dedicated at Olympia upon a pillar an image of Victory. This statue is a work by Paeonius of Mende, and was made from spoils taken from enemy forces—I believe at the time they fought against the Acarnanians and the Oeniadae. But the Messenians themselves say that the dedication is connected with the action carried out together with the Athenians on the island of Sphacteria. They say further that their omission of their enemies' name in the inscription was due to fear of the Spartans, while they felt no such fear concerning the Oeniadae or Acarnanians.