"The Password is…?!" (合言葉は…!!, Aikotoba wa…!!) is chapter 46 of the original Naruto manga.
Soon after entering the Forest of Death, Naruto breaks away from the rest of Team 7 to go to the bathroom. When he returns he is immediately attacked by Sasuke. Sakura asks why, so Sasuke explains that this Naruto is missing the scratch on the cheek that Naruto received earlier. The ninja removes his disguise and tries to take their scroll by force, but he is injured by Sasuke and forced to retreat. When they find the real Naruto, Sasuke decides that they should have a password only they will know in case they are separated again. Sasuke's suggested password is very long and Naruto proposes something simpler. They are immediately attacked by another ninja and separated. Sasuke finds Sakura, who confirms her identity by reciting the password. Naruto locates them soon afterwards and also gets the password correct. Sasuke attacks him, pointing out that the real Naruto would never have remembered the password.