His chief halakhic (legal) works were Darke Moshe and Mappah.
Of the same school were Menahem ben Simeon of Posquieres, a commentator, who died about the end of the 12th century, and Moses ben Jacob of Coucy (13th century), author of the Semag (book of precepts, positive and negative) a very popular and valuable halakhic work.
About 1270), who had studied in France, wrote the fan.ous Or Zarua` (from which he is often called), an halakhic work somewhat resembling Maimonides' Mishneh Torah, but more diffuse.
The latter was a prolific writer of great influence, chiefly known for his Responsa, but also for his halakhic treatiseE, hiddushin and tosaphot.h.
1293), had an even greater influence through his halakhic work, ustally known as the Mordekhai.