Aaron ben Jacob ha-Kohen was a Proven al rabbi, one of a family of scholars living at Narbonne, France (not Lunel, as David Conforte and others say), and who suffered the expulsion of the Jews in 1306.

He emigrated to Majorca, and there, some time before 1327, composed a ritual work of great merit bearing the title Or ot ayyim (The Paths of Life). The first part deals chiefly with the laws concerning the daily prayers, the Sabbath, and the festivals, and was published in Florence in 1752. The work is a compilation of Talmudic laws and discussions rather than an original system, and was conceived on a plan similar to Jacob ben Asher's great code, the Arba'ah urim, which appeared soon afterward and superseded it as a ritual guide on account of its more practical character. The Or ot ayyim, however, contains some ethical and doctrinal chapters which are not found in Jacob ben Asher's code. Aaron ha-Kohen was especially fond of mystic lore and of rabbinical discussion. A less strict legalist than his more famous contemporary, his Or ot ayyim is of greater value to the student of literature than to one who seeks practical decisions.

An abridgment of the work, under the name of Kol Bo, a thesaurus, compiled most probably by Shemariah ben Simhah, a German scholar (according to others by Joseph ben Tobiah of Provence), came into common use, replacing the original work.

See also

• Hachmei Provence

Sources

• Jewish Encyclopedia bibliography: Henri Gross, "Aaron ha-Kohen und sein Ritualwerk Or ot ayyim," in Monatsschrift, 1869, pp. 433 450, 531-541; idem, Gallia Judaica, pp. 290, 420; Heimann Joseph Michael, Or ha- ayyim, No. 300; Benjacob, O ar ha-Sefarim, pp. 51, 239.

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