User blog comment:Annatar the Blue/A somewhat wacked theory with fact involved./@comment-26119768-20151212025955/@comment-27723099-20151218151104

@Rocket Exactly, you got it all right!

But what did really happen to Sauron then? It must be the same as with Durin's Bane. When Gandalf was killed, he was "sent back", back from where? From Eru's place outside of the world of from Mandos' Halls in Valinor?

If Gandalf went to Mandos' Halls, it is very unlikely that evil Maiar have the same faith. But I don't believe that Ainur have the same afterlife as Eru's Children.

Gandalf going to the Void after his death would make much more sense. The Void is where the world was created. The Void is where Melkor was banished to. You could say Melkor just lost his right to be in Middle Earth and had to go back to where he came from. The Void is still inhabited by all those (unknown) Ainur who did not enter Middle Earth, and according to this theory it is inhabited by all Ainur who died: The balrogs, Melkor, Saruman, Sauron. Possibly the Blue Wizards (although I refuse to accept that).