What are the implications for Islam if the Jews build the third temple.

[Zarathustraa]

My understanding is the entire conflict between the Jews and Muslims centers around the third temple. I've tried asking questions about the implications for Islam if the Jews reclaim their cornerstone under Al Aqsa and use it to build the third temple. However, I have not been able to get a clear answer. What are the implications for the Islamic faith if the Jews realize their Messianic age by building the third temple?

[CalvinistRev]

It's entirely unlikely since a priesthood is impossible owing to 70AD. While this sort of speculation may be interesting political fodder, it's not terribly realistic, theologically, politically, or religiously.