Board Thread:Naruto Discussions/@comment-28861328-20140618060932/@comment-5127065-20140625072424

Deathmailrock wrote: Wait, it said that Black Zetsu hid the corpse, not Tobirama.... besides, it wasn't shown how long the bunshin was used as a replacement... or why if Zetsu too the body.

Maybe Madara just need the clone there long enough to escape.....

Tobirama did hide the body in the forest of Konoha. Madara utilized Izanagi and rewrote the past, using a clone as his replacement meant that Hashirama killed a clone instead of Madara in the new rewritten history thanks to Madara.