From Chapter Fourteen of Rabbi Shloma Majeski’s Likkutei Mekoros. (Underlined text is the compiler’s emphasis.)
Translated by Boruch Merkur
“Fortunate is he who waits and reaches days of one thousand, three hundred, and thirty-five.”
––Daniel 12:12
Rashi: “Fortunate is he who waits, etc.”: Forty-five additional years, beyond the number mentioned above [i.e., beyond the number mentioned in Daniel 12:11: “From the time the daily sacrifice was removed and the silent abomination placed is one thousand, two hundred, and ninety”], for in the future, Melech Meshicheinu will be concealed after he is revealed, and then he will be revealed again, as we also find in Midrash Rus. And as it says in the writing of Rebbi Eliezer HaKalir (B’Siluk Yotzer Parshas HaChodesh [quoted below]): He will conceal himself from them Shvuyim Shisha [i.e., for six Shmita cycles, [approximately] 42 years].
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And he will sprout forth a shoot endeared with seven [names]
With him shall be Shepherds [numbering] seven
And he will innovate for the nation seven things
He will conceal himself Shvuyim Shiva [i.e., close to seven Shmita cycles, close to 49 years]
He will [then] return to reveal himself again to Um K’doshim (the holy nation)
Those with him shall be Mekudashim (those who sanctify G-d’s name)
But not L’Edrei Tzon K’doshim (not to the Flocks of Holy Sheep [i.e., he will not return then to the general population of the Jewish people])
Until the end of six months
Until the first of Rosh Chadashim (the head of the months)
Then he will appear to Adas K’doshim (to the holy congregation)
Those who survived Ol K’deishim (the yoke of the detestable ones)
He will show them new wonders
To innovate the new heavens
And to anoint Kodesh Kadashim (Holy of Holies)
To open Deles LiK’doshim (the door for the holy ones)
On Shabbos and on [new] months.
(Yotzer L’Parshas HaChodesh)
And he will sprout forth: Moshiach will sprout forth for us, he who is called by seven names: Menachem, Tzemach, Tzaddik, Dovid, Yinon, Moshiach, Shilo.
With him shall be Shepherds [numbering] seven. And he will innovate for us seven things: He will bring back seven things that are lacking: the Aron, the Luchos, the Kapores, the Kruvim, Aharon’s Staff, and the container of Mahn. (Tzemach Moshiach: like “My servant, Tzemach” ––Zecharya 3)
He will conceal himself: After Moshiach reveals himself he will conceal himself from them for close to seven Shmitos cycles. He will then return to the meek, who were killed in sanctifying G-d’s name.
But he will not reveal himself to all the Jewish people until the end of six months, in the month of Nissan. Then he will appear to all the Jewish people, who survived the yoke of the “detestable ones.”
He will show them seven new wonders and create for them new heaveans and a new earth. And he will inaugurate the Beis HaMikdash with the Anointing Oil (Shemen HaMishcha).
(Commentary of HaRav Yaakov Memdin from the Siddur Beis Yaakov Chelek Rishon, Shaar HaDagim)