Passage 10.1.7
προσετέτακτο δὲ τοῖς ἀνδράσιν, εἰ ἡττᾶσθαι τοὺς Φωκέας συμβαίνοι τῇ μάχῃ, τότε δὴ προαποσφάξαι μὲν τὰς γυναῖκάς τε καὶ παῖδας καὶ ὡς ἱερεῖα ἀναθέντας ταῦτά τε καὶ τὰ χρήματα ἐπὶ τὴν πυρὰν καὶ ἐνέντας πῦρ οὕτως ἤδη διαφθαρῆναι καὶ αὐτοὺς ἤτοι ὑπʼ ἀλλήλων ἢ ἐς τὴν ἵππον τῶν Θεσσαλῶν ἐσπίπτοντας. ἀντὶ τούτου μὲν ἅπαντα τὰ ἀνάλγητα βουλεύματα ἀπόνοια ὑπὸ Ἑλλήνων ὀνομάζεται Φωκική, τότε δὲ οἱ Φωκεῖς ἐποιοῦντο αὐτίκα ἐπὶ τοὺς Θεσσαλοὺς ἔξοδον·
It had been commanded to the men that, if it should happen the Phocians were defeated in battle, then first they must slaughter their women and children, and after dedicating them as sacrificial offerings, place them together with their possessions upon a pyre, set fire to it, and finally themselves perish, either killing each other or charging into the cavalry of the Thessalians. Because of this, the Greeks have termed all desperate plans "Phocian madness." At that time, however, the Phocians made immediately a sally against the Thessalians.