The Odyssey 12.46–60

let them bind thee in the swift ship hand and foot upright in the step of the mast, and let the ropes be made fast at the ends to the mast itself, that with delight thou mayest listen to the voice of the two Sirens. And if thou shalt implore and bid thy comrades to loose thee, then let them bind thee with yet more bonds. But when thy comrades shall have rowed past these, thereafter I shall not fully say on which side thy course is to lie, but do thou thyself ponder it in mind, and I will tell thee of both ways. For on the one hand are beetling crags, and against them roars the great wave of dark-eyed Amphitrite; the Planctae1 do the blessed gods call these. Thereby not even winged things may pass, no, not the timorous doves that bear ambrosia to father Zeus, but the smooth rock ever snatches away one even of these,