Passage 9.40.9
Καρανὸν δὲ οὐκ εὖ βουλεύσασθαι βαρβάροις τοῖς περιοικοῦσιν ἐς ἔχθραν ἐλθόντα ἀδιάλλακτον, καταστῆναί τε χρῆναι γὰρ μήτε ὑπὸ αὐτοῦ Καρανοῦ μήτε ὑπὸ τῶν ὕστερον βασιλευσόντων Μακεδονίας τρόπαια ἵστασθαι, εἰ ἐς εὔνοιάν ποτε τοὺς προσχώρους ὑπάξονται. μαρτυρεῖ δὲ τῷ λόγῳ καὶ Ἀλέξανδρος, οὐκ ἀναστήσας οὔτε ἐπὶ Δαρείῳ τρόπαια οὔτε ἐπὶ ταῖς Ἰνδικαῖς νίκαις.
Caranus did not, they say, wisely deliberate in entering into irreconcilable hostility with the neighboring barbarians. For he should have established the custom neither for himself nor for those who later ruled Macedonia, of erecting trophies, if ever they were to win over their neighbors' goodwill. Alexander also supports this claim by his example, for he erected no trophies either over Darius or in honor of his victories in India.