Passage 4.6.2
συνεχῶς μὲν δὴ τὰ πάντα ἐξ ἀρχῆς ἐς τοῦ πολέμου τὴν τελευτὴν οὐδετέρῳ διήνυσται· μέρος δὲ ᾧ ἑκάτερος ἠρέσκετο, ὁ μὲν τῆς τε Ἀμφείας τὴν ἅλωσιν καὶ τὰ ἐφεξῆς συνέθηκεν οὐ πρόσω τῆς Ἀριστοδήμου τελευτῆς, Ῥιανὸς δὲ τοῦδε μὲν τοῦ πρώτου τῶν πολέμων οὐδὲ ἥψατο ἀρχήν· ὁπόσα δὲ χρόνῳ συνέβη τοῖς Μεσσηνίοις ἀποστᾶσιν ἀπὸ Λακεδαιμονίων, ὁ δὲ καὶ ταῦτα μὲν οὐ τὰ πάντα ἔγραψε, τῆς μάχης δὲ τὰ ὕστερα ἣν ἐμαχέσαντο ἐπὶ τῇ τάφρῳ τῇ καλουμένῃ Μεγάλῃ.
Certainly, no one has written a complete, continuous account from beginning to end of the entire course of the war; rather, each historian chose only the portion which pleased him. One author composed the capture of Ampheia and subsequent events, extending not far beyond the death of Aristodemus. Rhianus, however, did not touch at all upon this first conflict, and recorded instead only those later developments, long afterward, that led to the revolt of the Messenians from the Lacedaemonians; even these he did not recount fully, but focused mainly upon the events following the battle which was fought near the trench called the "Great."