In book 12 of the odyssey what is the prophecy?

Circe gives them a feast, and at night warns Odysseus of the dangers his ship will face tomorrow. The next day, the crew follows her instructions, plugging their ears so the song of the Sirens will not tempt them away from their course; Odysseus listens to it but has his men lash him to the mast. Next, the men must sail between Scylla, a six-headed sea monster that devours sailors, and the treacherous whirlpools of Charybdis. Odysseus does not tell them of the imminent death, as they would panic. Indeed, Scylla seizes and eats six men.