 Moses wrote "Ma'amar ba-Ma'areket," an index to Maimonides' "Moreh Nebukim," and explanations of philosophical terms, printed, together with Saul Cohen's philosophical questions on the "Moreh" addressed to Isaac Abravanel, at Venice in 1574.This being considered a fragment of a collective work on the "Moreh," it was erroneously called "Qetzat Bi'ure ha-Moreh.