Bible Encyclopedias
Alfasi, Isaac ben Reuben

The 1901 Jewish Encyclopedia

Sometimes stated to be a grandson of Isaac Alfasi. He is frequently cited as the author of "Sha'are Shebu'ot," a work in twenty chapters on oaths, usually printed with Alfasi's "Halakot" (Fürst, "Bibl. Jud." 1:36; Benjacob, "Oẓar ha-Sefarim," p. 605). It is probable, however, that the actual author was Isaac ben Reuben of Barcelona or an otherwise unknown Isaac ben Reuben, especially as he quotes the Rif without claiming relationship.

Bibliography:
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Bibliography Information
Singer, Isidore, Ph.D, Projector and Managing Editor. Entry for 'Alfasi, Isaac ben Reuben'. 1901 The Jewish Encyclopedia. https://www.studylight.org/​encyclopedias/​eng/​tje/​a/alfasi-isaac-ben-reuben.html. 1901.