Board Thread:Naruto Discussions/@comment-26508646-20150704031517/@comment-25549954-20150712144543

No, now that I think about it is just like stealing senjutsu chakra from Hashirama (when Madara didn't have Rinnegan) so not Preta path, Obito can enter subconscious mind, I agree it is tailed beast ability don't know if Yin half of Kurama played a role there but Obito was able to do this he went into Madara's subconscious and steal the piece of Gyuuki and Shukaku's chakra and he stole Six Paths Senjutsu chakra from Madara.