ḤAYYIM (Eliezer) BEN ISAAC OR ZARU'A

ḤAYYIM (Eliezer) BEN ISAAC "OR ZARU'A" (late 13th century), German rabbi and halakhic authority, called "Or Zaru'a" after the famous work composed by his father, isaac b. moses of Vienna. Ḥayyim was orphaned in his early youth. His principal teacher was Meir b. Baruch of Rothenburg, whose opinions he frequently cited. He also studied under such eminent scholars as Asher b. Jehiel and Ḥayyim b. Moses of Wiener-Neustadt. His permanent places of residence were Regensburg, Neustadt, or Cologne and he is said to have spent some years in France. Ḥayyim is considered one of the last of the tosafists. While his father, Isaac b. Moses, the author of the Or Zaru'a, is mentioned numerous times throughout the tosafot commentaries, Ḥayyim is only mentioned in the Tosafot Yeshanim, a variant version of the tosafot commentaries. Ḥayyim's responsa (Leipzig, 1865; repr. Jerusalem, 2002, with commentary) are especially valuable for the light they shed on the people, places, and events of his time. Thus he mentions (no. 110) a rabbinical synod which he attended at Mainz in about 1288, in which one of the matters discussed was the taxes imposed on the Jews by Rudolf of Hapsburg. In the same responsum he refers in passing to R. Meir of Rothenburg's imprisonment (see also no. 164). Some of the responsa provide important source material on Jewish-Christian relations in the 13th century. Most of Ḥayyim's decisions are based on those of the French and German halakhic authorities, particularly on his father's Or Zaru'a. His abridged version of that codification, which he entitled Kiẓẓur Or Zaru'a (or Simanei Or Zaru'a), summarized each section of the original work, omitted the legal discussions, and included his own views together with those of other scholars. From the many references to the Kiẓẓur Or Zaru'a in German rabbinic literature of the 14th and 15th centuries it is clear that his abridgment enjoyed long popularity. An important aspect of Ḥayyim's work is the lively correspondence he conducted with many of his contemporaries. It is believed that he addressed inquiries even to the Spanish scholar solomon b. abraham adret (Resp. Rashba, pt. 1, no. 572). Knowledge about the life and teaching of Ḥayyim "Or Zaru'a" derives from a book of responsa of which he was the author and a book of homiletic sermons (derashot) which was published under the title Derashot MHR"H, Halakhic Decisions of Rabbi Ḥayyim Or Zaru'a, first ed. according to Parma MS Moscow by Yitzḥak Shimshon Lange (Jerusalem, 1973). The book of Derashot contains homiletic treatises on 25 portions of the Torah, summing up various laws and customs. Both his responsa and homiletic treatises contain a wealth of material throwing light on relations between Jews and their gentile surroundings. He endeavors throughout to provide the Jews of Ashkenaz with guidance in their dealings with the hostile gentile environment. From the copious historical material found in his responsa, much can be learned about the Jewish   communities (Kehillot), their internal organization, leadership, rights, and obligations. We also learn how he grappled with the challenges and dangers of living as a Jew in the midst of a medieval, gentile society. -BIBLIOGRAPHY: Wellesz, in: MGWJ, 48 (1904), 211–3; idem, in: REJ, 53 (1907), 67–84; 54 (1907), 102–6; Freimann, in: JJLG, 12 (1918), 314 (index), s.v. Chajim Elieser b. Isak Or Sarua; M. Pollak, Juden in Wiener-Neustadt (1927), 8, 35, 39; Urbach, Tosafot, index, s.v. Ḥayyim b. Yiẓḥak; Y. Horowitz, "Rabbi Ḥayyim Or Zaru'a and his Relationship to Gentiles" (Hebrew), in: Proceedings of the 9th World Congress of Jewish Studies, Division B, vol. I (Jerus., 1986), 107–112. ADD. BIBLIOGRAPHY: M.M. Rozner, in: Piskei Rabbenu Asher: Mesekhet Megillah (1999); Y. Horowitz, in: Hevrah ve-Historiyah (1980), 93–102; Y. Ta-Shema, in: Sinai, 66 (1970), 339–46. (Shlomo Eidelberg / Yehoshua Horowitz / David Derovan (2nd ed.)