Xenia, the Greek term for the Laws of Hospitality, The custom in classical Greece and other ancient cultures that, if a traveler comes to a strange town, he can ask for food, shelter, and gifts to help him on his journey. In Greek tradition, the host was considered responsible for his guest's comfort and safety, and a breach of those laws of hospitality was thought to anger Zeus, God of the gods.
In the Odyssey there are a few instances in which the law of Xenia is broken, quite a few of those belong in book nine of the Odyssey, in which Odysseus and his men are lured into a Cyclops’ cave in which the owner, Polypheus, is angered and doesn’t care about the law of Xenia.
One example in which Polyphemus breaks Xenia is, when