What instructions dose Circe give Odysseus?

Circe instructs Odysseus to journey to the Underworld to seek guidance from the prophet Tiresias. She advises him to make sacrifices to the gods, particularly Poseidon, to ensure a safe return home. Additionally, she warns him to avoid the Sirens and not to harm the cattle of the Sun God, HeliOS, as doing so would lead to dire consequences for his crew.