Awesome story told by the Tzemach Tzedek in a maamar about a dream Reb zushe had where the Baal Hatosffos Rabbeinu Yitzchok explained to him a line in the machzor of Rosh hashono

Awesome story told by the Tzemach Tzedek in a maamar about a dream Reb zushe had where the Baal Hatosffos Rabbeinu Yitzchok explained to him a line in the machzor of Rosh hashono

הוא באחד ומי ישיבנו ונפשו איותה ויעש נורא וקדוש