Board Thread:Naruto Discussions/@comment-4271790-20141016102132/@comment-1512913-20141020115211

Anyway my point was that the incarnates of Ashura and Indra aren't literary reincarnated Ashura and Indra. Hashirama/Naruto and Madara/Sasuke and others don't have Hagoromo sons' souls, just their chakras. Kay Uchiha and many others are confused by this.

Ashura and Indra's souls are likely either in limbo/purgatory or pure land, but most likely the latter considering that had they been in the former, they would have met with Hagoromo there.