Passage 3.13.3
ὁ δὲ Καρνειός, ὃν Οἰκέταν ἐπονομάζουσι, τιμὰς εἶχεν ἐν Σπάρτῃ καὶ πρὶν Ἡρακλείδας κατελθεῖν, ἵδρυτο δὲ ἐν οἰκίᾳ Κριοῦ τοῦ Θεοκλέους, ἀνδρὸς μάντεως· τούτου δὲ τοῦ Κριοῦ γεμιζούσῃ τῇ θυγατρὶ ὕδωρ συντυχόντες κατάσκοποι τῶν Δωριέων αὐτῇ τε ἀφίκοντο ἐς λόγους καὶ παρὰ τὸν Κριὸν ἐλθόντες διδάσκονται τὴν ἅλωσιν τῆς Σπάρτης.
Karneios, whom they surname Oiketas, was honored in Sparta even before the return of the Herakleidai. His statue stood in the house of Krios, son of Theokles, a man who was a seer. Once, as Krios's daughter was drawing water, some Dorian spies encountered her, engaged her in conversation, and after being introduced to Krios, from him they learned how Sparta could be captured.