Hospitality is mentioned many times in Odysseus. It is known as xenia in the poem. One notable example is.
Here is a poor man come, a wanderer,
driven by want to beg his bread, and everyone
in hall gave bits, to cram his bag—only
Antinous threw a stool, and banged his shoulder
The lines show Odysseus disguised as a beggar and shares his bread with another beggar in a weird way because he had to defeat him in order to eat. However, Odysseus does not kill the old man and even shows his hospitality.