Passage 9.1.8
ἐγένετο δὲ ἡ ἅλωσις Πλαταίας ἡ δευτέρα μάχης μὲν τρίτῳ τῆς ἐν Λεύκτροις ἔτει πρότερον, Ἀστείου δὲ Ἀθήνῃσιν ἄρχοντος. καὶ ἡ μὲν πόλις ὑπὸ τῶν Θηβαίων καθῃρέθη πλὴν τὰ ἱερά, τοῖς δὲ Πλαταιεῦσιν ὁ τρόπος τῆς ἁλώσεως σωτηρίαν παρέσχεν ἐν ἴσῳ πᾶσιν· ἐκπεσόντας δὲ σφᾶς ἐδέξαντο αὖθις οἱ Ἀθηναῖοι. Φιλίππου δέ, ὡς ἐκράτησεν ἐν Χαιρωνείᾳ, φρουράν τε ἐσαγαγόντος ἐς Θήβας καὶ ἄλλα ἐπὶ καταλύσει τῶν Θηβαίων πράσσοντος, οὕτω καὶ οἱ Πλαταιεῖς ὑπʼ αὐτοῦ κατήχθησαν.
The second capture of Plataea occurred two years before the battle of Leuctra, in the archonship at Athens of Asteius. The city was razed to the ground by the Thebans, except for the sacred precincts. As for the Plataeans themselves, the manner of the city's fall provided equal safety for all of them, and after their exile the Athenians once more received them. Later, when Philip prevailed at Chaeronea and placed a garrison in Thebes, taking further measures leading to the overthrow of the Thebans, the Plataeans also were restored by him to their homeland.