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This text is an excerpt from the book "Odisseia" that tells the adventures of Odisseu, king of Itaca, when he was trying to return home, after being away for more than ten years.
This passage is spoken by Teiresias, a prophet who tells Odysseus that he will be able to return home, but on the way he will meet the sacred cattle of the god Helium. This cattle must be left alone and neither Odysseus nor any of his crew must touch the cattle so that they can get home.