Naruto Episode 47
Neji reveals that he had been toying with Hinata, and he disables her ability to use chakra with the Gentle Fist style. Hinata, inspired by Naruto, refuses to give up. She tells Neji that she believes that he is suffering more from fighting his destiny. Angered, Neji attempts a fatal blow, but four observing Jonin halt him. Hinata collapses into cardiac arrest shortly after, and Naruto vows to avenge her.
Source: Wikipedia
Naruto Episode 47 – A Failure Stands Tall!
