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
Maamarim Haktzarim is a unique volume of discourses, containing early discourses by Rabbi Schneur Zalman. Unlike the discourses delivered in later years, these were of a brief, pithy style, intellectually stimulating and emotionally stirring, enflaming the hearts of his Chasidim to attain great spiritual heights.
These discourses were selected by a team of scholars at Kehot, with direction and guidance by the Rebbe.