Why does Odysseus spare the lives of phemios and medon?

Odysseus spares the lives of PhemiOS and Medon because they were not involved in the suitors' wrongdoing. PhemiOS was a bard who was forced to entertain the suitors, and Medon was a herald who tried to protect Penelope and Telemachus during the chaos. Odysseus recognized that they were not his enemies and spared them from harm.