Board Thread:Naruto Discussions/@comment-25442710-20140920121351/@comment-23887466-20140920203731

Elveonora wrote: But we were told Ashura + Indra's chakra = Hagoromo's chakra. So why shouldn't Hagoromo's chakra in case of Naruto contain Indra's? Yes. But don't forget that both Sasuke who received Hagoromo's Chakra and Madara who achieved Hagoromo's Chakra through mixing his Chakra with Hashirama's, couldn't awaken the Rikudou Senjutsu, instead they both awakened the Rinnegan. Now what about Naruto and Asura, they both received Hagoromo's Chakra, one got the Rikudou Senjutsu and the latter if not the same, then he received a similar state to it.

In both cases, there are conditions to be met to awakened either Rinnegan or Rikudou Senjutsu. Sasuke and Madara fulfilled the conditions for the Rinnegan, while Naruto and Asura fulfilled the conditions for the Rikudou Senjutsu.