"Beyond the Limit of Darkness and Light" (リミットぶっちぎり! ～光と闇～, Rimitto Bucchigiri! ~Hikari to Yami~) is episode 79 of the original Naruto anime.
As they transform, and while Gamabunta holds Shukaku in place, Naruto wakes Gaara up by delivering a hard punch in order for Gaara to suppress Shukaku. Meanwhile, Konoha shinobi begin the counter-attack on the invading forces. At the site of the Third Hokage's battle with Orochimaru, the Third realises that he doesn't have enough strength left to fully seal Orochimaru's soul, and instead opted to seal his former pupil's arms successfully to make Orochimaru unable to use any ninjutsu. Wishing his student a fond farewell, the Third dies after reciting one last proverb. At this time Naruto and Gaara leap at each other, and Naruto succeeds in delivering the winning blow.