R. Abraham b. Shmuel ibn Hasdai ha-levi (early 13th century), was one of Maimonides' staunchest adherents, he corresponded with Judah ibn Alfakhar and Meir ha-Levi Abulafia to convince them to retract their opposition to Guide of the Perplexed. Together with his brother Judah, he addressed a letter to the Jews of Castile, Aragon, Navarre, and Leon denouncing the zealotry of the opponents of Maimonides. He also defended R. David Kimhi who had been violently criticized because he supported Maimonides. Ibn Hasdai translated important scholarly works from Arabic into Hebrew: Moznei Zedek ("Scales of Justice," ed. by J. Goldenthal, 1834–39), from the Arabic original Mizan al-'Amal by the Muslim philosopher Algazali; Sefer ha-Tappu'ah ("The Book of the Apple," in Likkutei ha-Pardes, Venice, 1519, etc.), attributed to Aristotle; Sefer ha-Yesodot ("The Book of the Elements," ed. by S. Fried, 1900), by Isaac b. Solomon Israeli. Ibn Hasdai also translated Maimonides' Sefer ha-Mitzvot ("The Book of Precepts") and Iggeret Teiman ("Letter to Yemen") of which only fragments are extant.