One who contributes from his wealth for the purpose of writing or publishing a sefer of a Tzaddik –
Behold, at any given time, and in any corner of the world, that a person studies from this sefer, the Tzaddik [on high] evokes merit on behalf of the donor through whom the sefer was disseminated.
—The Rebbe, Igrot Kodesh, vol 2
By Rabbi Dovber of Lubavitch
Written for erudites, this book is a collection of Chasidic discourses by the Mitteler Rebbe on the subjects of Rosh Hashanah, Yom Kippur, Shabbos Shuvah, and the Aseret Y'mei T'shuvah. In the course of the study one delves into the purpose of creation, and the deeper meaning of mitzvot.