Codifications by the Geonim of the halakhic material in the Talmud. An early work, She'iltot ("Questions") by Achai of Shabcha (c. 752), discusses over 190 Mitzvot — exploring and addressing various questions on these. The first legal codex proper, Halakhot Pesukot ("Decided Laws"), by Yehudai Gaon (c. 760), rearranges the Talmud