The Bounty Hunter from the Wilderness

is episode 159 of the original Naruto anime.

Synopsis
Naruto, Hinata and Kiba accept what they believe will be an easy mission to catch a criminal. Upon arriving at the thief's last known location however, they learn that another bounty hunter, Sazanami, is pursuing the thief and that he is a skilled swordsman. Sazanami is later wounded in the battle and Naruto's group takes him to safety, but discover that he too is a wanted criminal when a bounty hunter tried to catch him.