"The Bond with You" (キミとのつながり, Kimi to no Tsunagari, Viz: Our Bond) is chapter 305 of the original Naruto manga.
Orochimaru attacks. Naruto sends Sai to look for Sasuke while he deals with Orochimaru. Yamato and Sakura, sensing Naruto preparing to fight, arrive to help, but Orochimaru decides to retreat instead. As Sai combs the area, Yamato goes through the belongings he left behind. He finds the orders given to Sai by Danzō: to get close to Orochimaru through any means in order to assassinate Sasuke. Naruto does not believe Sai would do that, which Sai confirms when he locates Sasuke, telling Sasuke that he wants to reunite him with Naruto.