Passage 7.16.5
τούτῳ γὰρ τῷ ἀνδρὶ ἱππαρχήσαντι ἐν Σικελίᾳ, ὅτε Ἀθηναῖοι καὶ ὅσοι ἄλλοι τοῦ στόλου μετεσχήκεσαν ἀπώλλυντο πρὸς τῷ ποταμῷ τότε τῷ Ἀσινάρῳ, τούτῳ τότε τῷ Καλλιστράτῳ παρέστη τόλμα διεκπαῖσαι διὰ τῶν πολεμίων ἄγοντι τοὺς ἱππέας· ὡς δὲ τὸ πολὺ ἀπέσωσεν αὐτῶν ἐς Κατάνην, ἀνέστρεφεν ὀπίσω τὴν αὐτὴν αὖθις ὁδὸν ἐς Συρακούσας, διαρπάζοντας δὲ ἔτι εὑρὼν τὸ Ἀθηναίων στρατόπεδον καταβάλλει τε ὅσον πέντε ἐξ αὐτῶν, καὶ τραύματα ἐπίκαιρα αὐτὸς καὶ ὁ ἵππος λαβόντες ἀφιᾶσι τὴν ψυχήν.
For when this man was commanding the cavalry in Sicily, at the time when the Athenians and all others who shared in their expedition were being destroyed by the river called Asinaros, precisely then Callistratos had sufficient courage to lead his horsemen out, cutting through the enemy ranks. After saving most of them and bringing them safely to Katane, he turned back again along the same road towards Syracuse; and finding the Athenian camp still being plundered, he slew about five of the enemy before both he himself and his horse, having received severe wounds, surrendered their lives.