Passage 7.16.4
εἰ δὲ ἐτόλμησεν ἐσδραμεῖν μετὰ τὴν μάχην Δίαιος ἐς Κόρινθον καὶ ὑποδέξασθαι τῷ τείχει τοὺς διαπίπτοντας ἐκ τῆς φυγῆς, κἂν εὕρασθαί τι παρὰ Μομμίου οἱ Ἀχαιοὶ φιλάνθρωπον ἐδυνήθησαν, ἐς πολιορκίαν καὶ τριβὴν πολέμου καταστάντες· νῦν δὲ ἀρχομένων ἔτι ἐνδιδόναι τῶν Ἀχαιῶν εὐθὺ Μεγάλης πόλεως ἔφευγεν ὁ Δίαιος, οὐδέν τι γενόμενος ἐς Ἀχαιοὺς ὅμοιος ἢ καὶ Καλλίστρατος ὁ Ἐμπέδου πρὸς Ἀθηναίους.
But if Diaeus, after the battle, had dared to hasten into Corinth and had received within its walls those fleeing from their defeat, the Achaeans might have found some humane treatment from Mummius, by establishing themselves for a siege and the wear of warfare. But now, with the Achaeans only just beginning to yield, Diaeus immediately fled from the great city, proving himself towards the Achaeans no different from Callistratus, son of Empedus, towards the Athenians.