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Isaac ben Moses of Vienna

Isaac ben Moses of Vienna, also called Isaac Or Zarua or the RIAZ (fl. 13th c.), born in Bohemia, is considered to be one of the prominent rabbis of the Middle Ages. He attained his fame in Vienna and his major work, the halakhic guide known as the Or Zarua, a compilation of halakhic decisions and legal rulings, was very popular among Ashkenazic Jewry. He was a member of the Ḥasidei Ashkenaz and studied under many scholars, including Eliezer ben Joel HaLevi, Judah ben Samuel of Regensburg, Samson of Coucy and Eleazar of Worms. He was among the teachers of Meir of Rothenburg.

https://en.wikipedia.org/wiki/Isaac_ben_Moses_of_Vienna
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🆕 אֵל ׀ אֱֽלֹהִים ה׳ דִּבֶּר וַיִּקְרָא | El Elohim Hashem Diber vaYiqra, a yotser piyyuṭ for the Shabbat before Rosh haShanah by Rabbi Isaac ben Moses

Contributed by: Isaac Gantwerk Mayer (transcription & naqdanut), Isaac Gantwerk Mayer (translation), Isaac ben Moses of Vienna

This is the first piyyuṭ in a yotsrot cycle for the Shabbat before Rosh haShanah, according to Minhag Polin (as traditionally practiced in the Ashkenazi communities of northeastern Germany and Poland), all written by a Rabbi Yitzḥak ben Moshe haLevi according to the authorial acrostic. Zunz identifies the author as Rabbi Isaac ben Moses of Mainz, who died in the Gzerot Tatno of 1096. Fraenkel disputes this and suggests Rabbi Isaac ben Moses of Vienna (a/k/a the Or Zarua), of the Ḥasidei Ashkenaz, who died in around 1270. The yotser is an exultant heikhalot-tinged description of the midrash of seven heavens befitting the Shabbat before creation. Also included is the German text of Isaac Seligman Baer’s Avodat Yisrael translation, in modernized spelling.


🆕 שְׂאוּ לְבַבְכֶם לְכַפֵּיכֶם | Səū l’Vavkhem l’Khapeikhem, an ofan piyyuṭ for the Shabbat before Rosh haShanah by Rabbi Isaac ben Moses

Contributed by: Isaac Gantwerk Mayer (transcription & naqdanut), Isaac Gantwerk Mayer (translation), Isaac ben Moses of Vienna

This is the second piyyuṭ in a yotsrot cycle for the Shabbat before Rosh haShanah, according to Minhag Polin (as traditionally practiced in the Ashkenazi communities of northeastern Germany and Poland), all written by a Rabbi Yitzḥak ben Moshe haLevi according to the authorial acrostic. Zunz identifies the author as Rabbi Isaac ben Moses of Mainz, who died in the Gzerot Tatno of 1096. Fraenkel disputes this and suggests Rabbi Isaac ben Moses of Vienna (a/k/a the Or Zarua), of the Ḥasidei Ashkenaz, who died in around 1270. The ofan is an invocation to the listener to repent, calling upon specific angels by name. Also included is the German text of Isaac Seligman Baer’s Avodat Yisrael translation, in modernized spelling.


🆕 אֱלֹהִים ׀ אֵלִי אַתָּה אֲֽשַׁחֲרֶךָּ | Elohim Eli Atah Ashaḥarekha, a zulat piyyuṭ for the Shabbat before Rosh haShanah by Rabbi Isaac ben Moses

Contributed by: Isaac Gantwerk Mayer (transcription & naqdanut), Isaac Gantwerk Mayer (translation), Isaac ben Moses of Vienna

This is the third piyyuṭ in a yotsrot cycle for the Shabbat before Rosh haShanah, according to Minhag Polin (as traditionally practiced in the Ashkenazi communities of northeastern Germany and Poland), all written by a Rabbi Yitzḥak ben Moshe haLevi according to the authorial acrostic. Zunz identifies the author as Rabbi Isaac ben Moses of Mainz, who died in the Gzerot Tatno of 1096. Fraenkel disputes this and suggests Rabbi Isaac ben Moses of Vienna (a/k/a the Or Zarua), of the Ḥasidei Ashkenaz, who died in around 1270. This zulat piyyuṭ, citing Psalms 119 repeatedly, begs for divine justice, invoking martyrs’ memories (and perhaps endorsing Fraenkel’s suggestion that its authorship must postdate the Gzerot Tatno!).



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