Book of Kabbalistic compilations by Rabbi Hai Gaon and Kabbalistic prayers. With additional Kabbalistic compilations: Sha'ar HaShamayim by Rabbi Yosef Giktilia, Likutei Shem Tov, Ma'amar Ploni Almoni, on the 10 Sefirot and Names. "Tefillat R' Ya'akov Yasgova" [of Strzegowo], "Sefer Ha'Iyun L'Rav Chamai Gaon", "Secrets by the Kabbalist Chacham Yosef Giktilia" on the mitzvoth, and "Booklet by Rabbi S.T. from the Rashba" explanations of Torah secrets by the Ramban. [Warsaw, 1798]. First edition.
Printed by the Magid Rabbi Yisrael of Koznitz, from manuscripts hidden in his possession, edited by his disciple and personal scribe Rabbi Gavriel of Warsaw. With the approbation of the Magid of Koznitz printed on the verso of the title page. He writes that the manuscript and its printing were performed by his instructions and that Rabbi Levi Yitzchak of Berdychiv also agreed to print the book, "And with the permission of… Rabbi Levi Yitzchak Av Beit Din of Berdychiv".
[1], 46 leaves. 17 cm. On Leaf 36 is an Ilan Sefirot, large and folded. Good-fair condition, major wear and stains. Various ancient signatures. Worn detached binding.
Stefansky Chassidut, no. 305.

Yesod Yitzchak, kabbalistic and Chassidic interpretations of matters pertaining to Brit Milah. Halichot Olam, customs and segulot. Rabbi Yitzchak Isaac HaLevi Mazarowitz [author of Raza Meheimana and Otiot D'Rabbi Yitzchak]. Zhovkva, 1810. First edition.
Many approbations by leading Torah scholars: Rabbi Meir [Kristianpoller] of Brody; Rabbi Ya'akov Orenstein of Lvov, author of Yeshuot Ya'akov; Rabbi Efraim Margaliot of Brody; Rabbi Moshe Shapira of Zaliztsi; Rabbi Aryeh Leib HaCohen of Stryy, author of Ketzot HaChoshen; etc .
Leaves 41-47 have sections for study the night before circumcision called "Vach-Nacht [compilations from the Zohar].
The author Rabbi Yitzchak Isaac HaLevi (1735-1783), kabbalist and hidden tsaddik, among the lamed-vav (36) tzaddikim of the Ba'al Shem Tov's generation and teacher of Rabbi Moshe Teitelbaum, author of Yismach Moshe. Served as Shochet and Bodek and teacher in the village of Zhuravichi, hid his holy ways so much that many thought he lost his mind and was unlearned and uncouth. At nights, he would toil in prayer and kabbalah and write his books. The Ba'al Shem Tov would travel to discuss secret matters with him. When his greatness and holiness became famous, masses thronged to him compelling him to wander from his home. He died in the city of Przemyśl during his travels.
The story is told that when Rabbi Yitzchak Levi was yet healthy and well he sent his wife to summon the Chevra Kadisha. He told them that the time had come for him to die and asked them to copy his many kabalistic writings before dressing him in his shrouds until they see his face change and burn like a torch. 100 Torah scholars copied his writings until they saw his face change and the box of writings close on its own, they then buried him and eulogized him fittingly. The copies were buried in his holy grave but his manuscripts reached the Maggid of Kremnitz Rabbi Ya’akov Yisrael HaLevi, who printed the books Raza MeHeimna (Lvov, 1791) Otiot D’Rabbi Yitzchak (Zhovkva, 1801) and Yesod Yitzchak.
[5] 5-69 leaves. 21.5 cm. Thick and soft paper, good-fair condition, use stains, few worm damages to text. Tear with lack to corner of Leaf 64. Non-original binding.
Stefansky Chassidut, no. 233.