In Greek mythology, Iphitus (Iphitos) son of Eurytus of Oechalia is the brother of Iole who befriends Heracles and, in Homeric tradition, gives Odysseus the great bow later used against Penelope's suitors. Apollodorus and others also make him a victim of Heracles after the hero is denied Iole. Distinct from Iphitus son of Naubolus (Phocian Argonaut and father of Schedius), from the Elean restorer of the Olympics, and from Trojan Iphitoi.
Adapted from Wikipedia, "Iphitos" · CC BY-SA 4.0
I.Son of Eurytus
Eurytus, king of Oechalia, was famed as an archer and father of Iole and Iphitus. When Heracles sought Iole, Eurytus refused him despite losing an archery contest; friendship with Iphitus is one of the few warm ties Heracles keeps in that house.
In one strand Heracles later kills Iphitus — thrown from Tiryns' walls in madness or after a cattle dispute — a crime that drives the hero into servitude under Omphale. Other tellings keep Iphitus as brother-in-law and even lover of Heracles.
II.Odysseus' bow
Homer's Odyssey recalls that Iphitus, "a man like unto the immortals," met Odysseus in Messene and gave him the bow of Eurytus — the weapon Penelope's contest will require and with which the returned king slaughters the suitors.
The atlas id iphitus-eurytus must not be merged with iphitus-phocis (Naubolus' son, Phocian leader whose sons sail to Troy) or with the historical-mythic Iphitos of Elis who refounded the Olympic truce.