Passage 8.7.4
τοῦ δὲ Ἀργοῦ καλουμένου πεδίου Μαντινεῦσιν ὄρος ἐστὶν ἐν ἀριστερᾷ, σκηνῆς τε Φιλίππου τοῦ Ἀμύντου καὶ κώμης ἐρείπια ἔχον Νεστάνης· πρὸς ταύτῃ γὰρ στρατοπεδεύσασθαι τῇ Νεστάνῃ Φίλιππον λέγουσι καὶ τὴν πηγὴν αὐτόθι ὀνομάζουσιν ἔτι ἀπὸ ἐκείνου Φιλίππιον. ἀφίκετο δὲ ἐς Ἀρκαδίαν Φίλιππος οἰκειωσόμενός τε Ἀρκάδας καὶ ἀπὸ τοῦ Ἑλληνικοῦ σφᾶς τοῦ ἄλλου διαστήσων.
On the left-hand side of the plain called Argon there is a mountain belonging to the Mantineans, upon which stand the ruins of the village of Nestane and of the camp of Philip son of Amyntas. For they say Philip encamped at Nestane, and the spring there is still named Philippium after him. Philip had come into Arcadia both to establish friendly relations with the Arcadians and to detach them from the rest of the Greek alliance.