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Bible Encyclopedias

The 1901 Jewish Encyclopedia

Isaac Ben Jacob ha-Laban

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Tosafist and liturgical poet flourished at Prague in the twelfth century the brother of the traveler Pethahiah of Regensburg. He was among the earliest of the tosafists ("ba' ale tosafot yeshanim"), a contemporary of R. Eleazar of Metz, and a pupil of R. Tam ("Sefer ha-Yashar," § 704 Solomon Luria, Responsa, No. 29). According to Recanati (Responsa, No. 168), Isaac directed the yeshibah of Ratisbon. He also lived at Worms for a time ("Agur," 71b). Isaac is mentioned in the Tosafot (Yeb. 5a, 71a Ket. 38b Zeb. 73b and frequently elsewhere), and Isaac ben Moses, in his "Or Zarua' ," No. 739, quotes Isaac ben Jacob's commentary on Ketubot, a manuscript of which exists in the Munich Library (No. 317). He is also mentioned in a commentary to the Pentateuch written in the first half of the thirteenth century (Zunz, "Z. G." p. 80). There is a piyyuṭ signed "Isaac b. Jacob," whom Zunz ("Litcraturgesch." p. 313) supposes to be lsaac ben Jacob ha-Laban.

Bibliography : Azulai, Shem ha-Gedolim , i. Michael, Or ha- Ḥ ayyim , p. 507 Zunz, Z. G. pp. 33, 42,45, 80 Grä tz, Gesch. 3d ed., 6:236 Fuenn, Keneset Yisrael , p. 627.S. S. M. Sel.

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Bibliography Information
Singer, Isidore, Ph.D, Projector and Managing Editor. Entry for 'Isaac Ben Jacob ha-Laban'. 1901 The Jewish Encyclopedia. 1901.

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