The assertion of some modern historians that, when advanced in age, he emigrated to Provence, is based on a misunderstanding of Meiri (see below), where the correct reading is instead of, and instead of (see Neubauer's edition, p. 230).
The "Precepts Concerning Wine," which is added to the work "'Abodat ha-Ḳodesh" by his opponent, Solomon ben Adret (Venice, 1602), is the only one published; another part is in manuscript in the Bodleian Library.
Several times during his rabbinical career Aaron came into conflict on important points with Solomon ben Adret, the leading spirit of the Spanish Jews.
While Adret inclined to mysticism, Aaron treated important dogmatical questions in a fashion which was distasteful to the orthodox, as, for instance, his opinion on resurrection.
Aaron was at first credited with the authorship of the "Sefer ha-Ḥinnuk"—an error corrected by Rosin ("Ein Compendium der Jüdischen Gesetzeskunde," 1871, pp. 131–134).