THE MOSHIACH [HAZRAT MAHDI (AS)] WILL BRING THE SHECHINAH TO THE MASJID OF THE PROPHET SOLOMON (PBUH)

Although the Moshiach [Hazrat Mahdi (as)]  will rebuild the “body” of the Beis HaMikdash – the stones and mortar that compose its physical structure – the “soul” of the Beis HaMikdash, its intangible spiritual component, will descend from Heaven.

When the Moshiach [Hazrat Mahdi (as)] arrives, it will descend to its place down here.

However, the future Mikdash that we await is already built and completed; it will fall from the Heavens, as it says, “The Sanctuary, my Lord, which Your hands established” (Shemos 15:17).

[Rashi, Sukkah 41a, s.v. “iy nami”]

Therefore, in my humble opinion, the Beis HaMikdash of the future will be a real building constructed by man. The verse “The Sanctuary, my Lord, that Your hands established” (Shemos 15:17), which the Midrash Tanchuma explains [as referring to the Beis HaMikdash of the future, which] will descend from above, is referring to a spiritual Beis HaMikdash, which will enter the physical Beis HaMikdash as a soul resides in its body...

[Aruch L’Ner, Sukkah 41a, s.v. “sham divrei hamaschil iy name”)