Zelig Reuven Bengis (1864 – 21 May 1953) was the Chief Rabbi of Jerusalem for the Edah HaChareidis. He wrote a seven-volume commentary on the Talmud, called "Leflagos Reuven". Youth He was the son of Rabbi Zvi Hirsch Bengis, the Rabbi of the Russian Empire (now Lithuanian) town of Šnipiškės (now a neighborhood of Vilna), and his wife Shayna, the granddaughter of Rabbi Aaron Brody, dayan of Vilna. Rabbi Zelig Reuven was soon known as "the Shnipishoker illui" (prodigy). When he was 17 years old, he went to learn in the Volozhin yeshiva under the Netziv, who called him "the living Shas". While learning at Valozhyn, his reputation quickly grew, and he was known as an extremely sharp student and a diligent learner. After having learned in Volozhin for several years, he married the daughter of Rabbi Chaim Tzvi Broide, Rav of the towns Nemakščiai (Nemoksht in Yiddish), Švėkšna (Shvkshna in Yiddish), and Žagarė (Zhager in Yiddish). After his marriage, he spent eight years living with his in-laws, learning all day. In 1892, he was appointed Rabbi of Boćki (Bodki), Poland, succeeding Rabbi Malkiel Tzvi Tenenbaum, who took the position of Rabbi of Lomza. While he was the Rabbi of Boćki, in the year 1906, he began to publish his Leflagos Reuvain volumes. These publications took a very unique form, and were far from the standard type of commentary on the Talmud. Rather they were primarily a series of pilpulistic connections between the beginning and end of each tractate and the beginning and end of each of the orders in which the tractates are found. The body of the books were brilliant and unique novellae and expositions of the positions of the Rishonim and their views. The particular genre in which Rabbi Bengis chose to couch his novellae was one that very few Talmudic students could explore, much less master, and that essentially caused his entire literary oeuvre to fall into obscurity. In later years, his grandson-in-law Rabbi Shmuel Vitsick (married to Chaya Perel Bengis) in dedication exerted much effort, travel, time and money engaging seforim experts and printers including Mossad haRav Cook to reorganize and publish three volumes of his thoughts, so as to make the contents more understandable to the general public. Rabbi Shmuel and Chaya Perel Vitsick had four daughters, respectively married to Aharon Golvensitz, Tzvi Hersch Taragin, Tzvi Gray and Hershel Schabes. A number of children