Passage 8.50.4
Φίλιππος δὲ ὁ Δημητρίου Μακεδόνων βασιλεύς, ὃς καὶ Ἄρατον φαρμάκῳ τὸν Σικυώνιον ἀπέκτεινεν, ἀπέστειλεν ἄνδρας ἐς Μεγάλην πόλιν φονεῦσαί σφισι Φιλοποίμενα ἐντειλάμενος· ἁμαρτὼν δὲ ἀνὰ τὴν Ἑλλάδα ἐμισήθη πᾶσαν. Θηβαῖοι δὲ κεκρατηκότες μάχῃ Μεγαρέας καὶ ἤδη τοῦ Μεγαρικοῦ τείχους ἐπιβαίνοντες, ἀπάτῃ τῶν Μεγαρέων μετελθόντων αὐτοὺς ὡς ἥκοι Φιλοποίμην σφίσιν ἐς τὴν πόλιν, ἐς τοσοῦτο εὐλαβείας προῆλθον ὡς οἴκαδε ἀποχωρῆσαι καταλιπόντες ἄπρακτον τοῦ πολέμου τὸ ἔργον.
Philip, son of Demetrius, king of Macedonia, who also killed Aratus the Sicyonian with poison, sent men to Megalopolis, instructing them to murder Philopoemen. But having failed in the attempt, he was thereafter hated throughout the whole of Greece. Moreover, the Thebans, who had defeated the Megarians in battle and were already mounting the walls of Megara, were deceived by the Megarians, who pretended that Philopoemen had come into their city. They became so cautious that they withdrew back to their homeland, leaving their campaign unfinished.