Isaac Asir HaTikvah

Isaac HaLevi Asir HaTikvah (died c. 1377 ), also known as Isaac of Beilstein, Among his students were Samson ben Samuel, author of Kitzur HaMordechai, and Menahem Zioni. Other students of his are mentioned in the above Herem document. Isaac's community received funding from Jewish communities in Europe.

Isaac is the first scholar known to have used the title Asir HaTikvah, literally "The prisoner of hope", a phrase found in Zechariah 9:12. as well as in Oxford Ms. Neubauer 784. Many of Isaac's rulings have been published by Rabbi Shlomo Spitzer. Additionally, Isaac is quoted once by Rabbi Yoel Sirkis is his commentary on the Tur.