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
Ner Mitzvah VeTorah Or
by Rabbi Dovber of Lubavitch
This volume consists of two works of the Mitteler Rebbe: Shaar Haemunah, which discusses the mitzvah to believe in G-d, and Shaar Hayichud, which explores the mitzvah to accept G-d's unity.
"Only through the strengthening of faith can one gain in Torah study, prayer, righteousness, and repentance," writes Rabbi DovBer, the Mitteler Rebbe, in the introduction to these two classic discourses on the foundation of faith and the oneness of G-d.
The Frierdike Rebbe states that Shaar Ha'emunah was written for Maskilim, and that Shaar Hayichud, the key to Torat Hachassidut, was written for all Chassidim (Kuntres Limud Hachassidut, 30).
This edition includes Reb Hillel Paritcher's commentary of Shaar Hayichud, as well as indices and endnotes.