From Chapter Five of Rabbi Shloma Majeski’s Likkutei Mekoros Vol. 2. (Underlined text is the compiler’s emphasis.)
Translated by Boruch Merkur
6. The main thing is that since [what it says regarding Moshiach] has already taken place – that “he will fight the wars of G-d”] “and he will be victorious” – there must immediately be the true and complete redemption brought about by Moshiach Tzidkeinu. Indeed, Moshiach Tzidkeinu is the shliach referred to in the verse, “shlach na b’yad tishlach,” none other than my revered father in-law, the Rebbe, leader of the generation, and the same is said of the one who subsequently assumed his position. [The leader of our generation has assumed his position] just as the Rebbe [Rayatz] filled the position of his father, the Rebbe, nishmaso Eden, as we have said several times regarding the seven branches of the Menora and regarding the Seven Ushpizin, etc.
Identifying the Rebbe as Moshiach is even alluded to in his name, Yosef, which is connected with the prophecy about the gathering of the exiles from all corners of the earth, “And it shall come to pass that on that day, yosif Ad-noi (the L-rd shall continue to apply) His hand a second time to acquire the rest of His people who will remain, from Assyria and from Egypt … and from the islands of the sea.” The exiles will be gathered from as far as the “islands of the sea,” which refers to all places that are not on the hemisphere where Mattan Torah took place, including the place where we are now, the place where my revered father in-law, the Rebbe, lived for ten years. From all these places, Moshiach gathers all the Jewish people to go to our holy land, Eretz Yisroel, as its boundaries will be in the Future Era – “until the great river, the River Pras (Euphrates)”: “Since Pras is mentioned in association with Eretz Yisroel, it is referred to as ‘great.’ A popular parable says: A king’s servant is a king. Associate yourself with the ruler, and people will bow down to you; attach yourself to a person anointed [with oil] and you will become anointed [with oil yourself] (k’rav legabei d’hina, v’idhan).” (Rashi on D’varim 1:7)
(To elaborate: “D’hina” relates to “shemen – oil,” and oil alludes to the inner dimension of Torah, and the advent of the true and complete redemption is particularly connected with the revelation and study of p’nimius ha’Torah. “Shemen” also refers to “shumen” and “essence” (as the concept is explained in maamarei Chassidus), the root and essence of all things.)
Another connection between Pras and the leader of our generation is that his leadership began in the year 5680 (1920), Tav-Reish-Pei, letters that spell “Pras.” Even from the beginning of his leadership there was a victory over all opposition (both with regard to men as well as women and children, for the concept of war and opposition to their concerns applies even to women and children). How much more so is this the case after the victory fully materialized in subsequent years, throughout all the forty years, when “G-d gave them the heart to know and eyes to see and ears to hear,” referring to the perfection of the three aspects of “Chabad” – Wisdom, Understanding, and Knowledge. During this period, the avoda and the shlichus of the leader of our generation was fully manifest, to the point that he becomes unified with Moshiach Tzidkeinu – immediately, with the true and complete redemption.
This is especially the case as we are presently a full year after the completeness of “Chabad” was achieved throughout this period of forty years. We have now entered the second year after this state of completion. Thus it is understood that in this year we must attain the ultimate perfection of the victory discussed above.
(From the address of Shabbos Parshas Chayei Sara, 25 MarCheshvan, at the International Shlichus Convention; Sichos Kodesh 5752, pg. 318-319)