@sechel hayashar ok I stand corrected on that. The exact phrase is Nassi Hador hu haMoshiach shebador, not Moshe Rabbeinu shebador hu haMoshiach shebador
And yes I was hoping that would come up in the follow up. The Rebbe strongly urged us to do everything possible to bring Moshiach but in case someone starts getting any ideas that are not in line with Torah, the Rebbe urged this be done – and this is famous within Chabad- as “Oirois dTohu bkeilim dtikkun.”
Oirois dTohu means the lights/energies of the worlds of Tohu which were spiritual worlds created before our world, but they crashed and shattered so to speak because the G-dly energies that animated then we’re way to strong. Like plugging an iPhone into an electricity generator. So Oirois dTohu means we need to work with extremely high energy and maybe even crazy ideas. But how?
Bkeilim dtikkun- in ways that are acceptable within this world.
I’ve tried to help achdus between Yidden in this thread with this phrase very much in mind