1. Rashi's commentary and Tosfos on Sukkah 41, end of side a and in other sources.
2. Aruch, entry Shaf (brought in the Chiddushei Aggada MaHaRaSHA, on Megillah 29a).
3. Megillah 29a. [In Hebrew, "Beis Rabbeinu Sh'B'Bavel". Translator's note.]
4. End of chapter 11. 5. See Sanhedrin 98a: "He is dwelling at the gate of Rome." [In the referenced passage, Rabbi Yehoshua ben Levi asks Eliyahu HaNavi where Moshiach can be found. The quotation actually combines the end of the question ("Where is Moshiach dwelling?") and the answer ("At the gate of Rome"). Translator's note.]
6. Megillah 29a. [The phrase is a reference to the Divine Presence going into exile with the Jewish people: G-d's Presence slipped away from Jerusalem and settled in Bavel. Translator's note.]
7. Yalkut Shimoni, Yeshayahu, remez 499.
8. Accordingly, the expression "He stands on the roof of the Beis HaMikdash" becomes clarified; that "roofs... do not become sanctified" (Rambam, Hilchos Beis HaBechirah, chapter 6, halacha 7). Hence this alludes to the lands outside of Israel in comparison to the holiness of the land of Israel.
9. Tanya, beginning of chapter 37.
10. See Igros Kodesh of the Rebbe RaYaTZ, vol. 2, p. 492 ff. See there for more details.
It may be suggested that the Temple of the future ("it will be revealed and come from heaven already built and perfected") will first be revealed in the place "That the Temple traveled and settled there" in the time of exile ("The House of our Rebbe in Bavel"); from there it will be transported to its place in Yerushalayim.
...Perhaps it can be said that this is alluded to in the Rambam's choice of words (in Hilchos Melech HaMoshiach) "And build the Temple in its place." For apparently [there is a question]: what is the need to inform us here that the building of the Temple will be in its place? On the other hand, why isn't the place specified: "And build the Temple in Yerushalayim?" [It must be] that "in its place" alludes as well to the place of the king Moshiach in the time of exile (before [the status of] "behold he is certainly Moshiach"). Therefore, while he is still in exile (for there he sits and waits and anxiously looks forward to redeeming the Jewish people, and the Divine Presence with them in exile) the king Moshiach builds a Temple (in microcosm). This is an illustration and example of the Temple in Yerushalayim (like "the synagogue of He slipped and settled," "that the Temple traveled and settled there.").
