 Ayin Beis

Sefer Hamamaarim 5672 (), or Ayin Beis, is a compilation of the Chasidic treatises by Rabbi Sholom Dovber Schneersohn, the fifth Rebbe of Chabad, from the Hebrew year 5672 (1911-12).This series of Chassidic essays are considered a fundamental work of Chabad mysticism for its original treatment of many Chassidic concepts.