Board Thread:Naruto Discussions/@comment-32900772-20170904113855/@comment-810492-20171012064320

I also want to point out that while Madara was still an edo tensei reanimation, he was once again defeated and subdued by Hashirama. Sai was about to seal him away too until he forced Obito to bring him back to life. However he was basically gambling that Obito wouldn't be killed or sealed. Had Obito been unable to revive him, Madara would've most certainly been sealed by Sai at that point.