"An Unexpected Kinjutsu!!" (まさかの禁術, Masaka no kinjutsu) is chapter 510 of the original Naruto manga.
Summary
Madara falls into the chasm, and she continuously dentonates exploding tags for ten minutes. Madara survives, and sttes that he used Izanagi to escape from the attack. After Madara explains how Izanagi works, Konan tries to kill Madara. Her attack is interrupted by Madara, and he forces her to tell him where Nagato is with a genjutsu. Madara arrives at the shrine where Nagato is hidden, and states that he is the "third of the six paths".