Naruto Episode 42
Sakura and Ino are evenly matched, and Ino tries a desperate move, her Mind Body Switch Technique. She succeeds and takes control over Sakura’s body. As she prepares to force Sakura to forfeit, Naruto cheers Sakura on and inadvertently awakens Inner Sakura, who forces Ino out of her body. Both drained of their chakra, the rivals knock each other out, resulting in a double knockout, and eliminating both from the finals.
Source: Wikipedia
Naruto Eapisode 42 – The Ultimate Battle: Cha!
