Who is tiresias and what did she say to Odysseus?

Tiresias is a blind prophet from Greek mythology, featured prominently in Homer's "Odyssey." When Odysseus encounters him in the Underworld, Tiresias provides crucial guidance for his journey home to Ithaca, warning him about the dangers he will face and how to appease Poseidon. He also foretells the challenges regarding his household and the eventual need to make amends for the wrongs committed against the gods. Tiresias's insights are essential for Odysseus to successfully navigate his trials and return home.