Shaarei HaYichud VehaEmunah, explanation of the Shaar HaYichud VehaEmunah section of the Tanya, by Rebbe Aharon HaLevi Segal Horowitz of Starosel'ye, close disciple of R. Shneur Zalman of Liadi, the Baal HaTanya. Shklow, [1820]. First edition.
The book opens with an important preface, which serves as a basis for investigating the nature of the Baal HaTanya's school of thought. It states that this book is an explanation, expansion and completion of the teachings of his Rebbe in the Shaar HaYichud VehaEmunah chapters of the Tanya. The book explains at length the Arizal's doctrine, based on the teachings of the Baal HaTanya.
Rebbe Aharon HaLevi Segal Horowitz (1766?-1829), G-dly kabbalist, outstanding and profound Torah scholar. A leading and close disciple of the Baal HaTanya.
Damaged copy. [18], 4, 4, 9-56, 60, 52, 44, [2], 28, [4] leaves. Misfoliation. Bluish paper. 15.5 cm. Fair-poor condition. Stains and wear. Dark stains to several leaves. Extensive worming to most leaves, significantly affecting text (all leaves were restored). New leather binding.
Stefansky Chassidut, no. 582.