Midrash HaGadol or The Great Midrash (Hebrew: מדרש הגדול) is a work of aggaddic midrash, expanding on the narratives of the Torah, which was written by David ben Amram Adani of Yemen (14th century). Its contents were compiled from the Jerusalem and Babylonian Talmud and earlier midrashic literature of tannaitic provenance. In addition, the compiler of the midrash borrows quotations from the Targums, Maimonides, and Kabbalistic writings, Avot of Rabbi Natan, Pesikta Rabbati, Pesikta de-Rav Kahana, Pirke Rabbi Eliezer, Mishnat Rabbi Eliezer [b. Rabbi Yose ha-Galili], and in this aspect is unique among the various midrashic collections. This important work, the largest of the midrashic collections, came to popular attention in the late 19th century through the efforts of Jacob Saphir, Solomon Schechter and David Zvi Hoffmann. In addition to containing midrashic material that is not found elsewhere, such as part of the Mekhilta of Rabbi Shimon ben Yochai. Most of the Mekhilta of Rabbi Shimon ben Yochai is found in the Midrash HaGadol, which, heretofore, has only been available in scattered and fragmented manuscripts. The Midrash HaGadol, along with the other extant fragmented manuscripts, were used by scholars to reconstruct the ancient Mekhilta. Midrash HaGadol contains what are considered to be more correct versions of previously known Talmudic and midrashic passages. Source: Wikipedia (en)