Passage 5.21.7
τὸ τέταρτον δὲ ἐθέλει λέγειν τὸν Ὀλυμπίασιν ἀγῶνα ἀρετῆς εἶναι καὶ οὐ χρημάτων, τὰ δὲ ἐπιγράμματα τὰ ἐπὶ τῷ πέμπτῳ τε καὶ ἕκτῳ, τὸ μὲν αὐτῶν δηλοῖ καθʼ ἥντινα αἰτίαν ἀνετέθη τὰ ἀγάλματα, τὸ δὲ ἀναμιμνήσκει τοῦ χρησμοῦ τοῦ Ἀθηναίοις ἐλθόντος ἐκ Δελφῶν.
The fourth inscription says that the Olympic contest is one of virtue and not of money. Of the inscriptions on the fifth and sixth statues, one indicates the reason for their dedication, and the other recalls the oracle delivered to the Athenians from Delphi.