Ohr HaYashar by Maharam Poppers - The Copy of Rebbe Yeshaya'le of Kerestir

Ohr HaYashar, Kabbalistic practices and ethics, by R. Meir Poppers. Lviv: Yehuda Gershon Druker, 1875.
Ownership stamps of Rebbe "Isaje [Yeshaya] Steiner" of Kerestir (Bodrogkeresztúr, Hungary). On the flyleaf is a handwritten ownership inscription: "This book belongs to the great and holy R. Yeshaya Steiner". Additional signatures of R. Aharon Spitzer of Hajdúnánás and of R. Klonimus Lowy of Nyíracsád. Handwritten corrections.
Ohr HaYashar contains ethical instruction as well as laws and practices of the Arizal, regarding prayers, mealtimes and daily routine, including daily routine for Shabbat and holidays, and other laws and practices. The book is divided into three parts corresponding to the three "pillars" upon which the world stands: Torah, worship and acts of kindness. This work has been incorporated into various Chassidic Kabbalistic siddurim, and was exceedingly beloved by the great Chassidic masters. Rebbe Yehoshua of Belz famously wrote that his father, the first Belzer Rebbe, stated that although he never writes approbations, he would give one to someone who wishes to print the siddur Ohr Hayashar, since this siddur introduced him to Yirat Shamayim… (see the approbation of Rebbe Yehoshua of Belz to Siddur Ohr HaYashar - Tefillah L'Moshe, Przemyśl, 1892).
R. Yeshaya Steiner of Bodrogkeresztúr (1852-1922) was the disciple and successor of Rebbe Zvi Hirsh of Liska (Olaszliszka), author of Ach Pri Tevuah. He was orphaned from his father at the age of three, and was raised in the home of R. Zvi Hirsh of Liska from the age of twelve. He was drawn to Chassidism and travelled to Rebbe Chaim Halberstam of Sanz and to Rebbe Mordechai of Nadvorna. However, his primary rebbe and mentor remained Rebbe Zvi Hirsh of Liska, and he eventually became his close assistant. [Even when R. Yeshaya already served as rebbe, with masses from all over Hungary flocking to his court, he would still sign his letters and on his stamp: "…who served the rebbe, the tzaddik of Liska"]. Rebbe Yeshaya was revered by the leading rebbes of his day, including Rebbe Chaim of Sanz and Rebbe Yissachar Dov of Belz [who stated that the "key to sustenance" is in the hands of R. Yeshaya of Kerestir]. He performed thousands of charitable deeds, engaged in hachnasat orchim himself, and was considered one of the pillars of chessed and prayer in his times. He was renowned as a holy man, and thousands of Jews (as well as non-Jews) from all over Hungary would travel to his court to seek his advice. He was also renowned as a wonder-worker and gave amulets (see next item). Till today his portrait is hung in homes as a segula for protection from mice. The story behind this custom is related in his biography, Mei Be'er Yeshayahu.
[24] leaves. 18 cm. Thin, high-quality paper. Good-fair condition. Wear and minor tears. Minor staining. Original binding, worn, with leather spine.