This rare autograph folio of Maimonides’ great code of Rabbinic law, the Mishneh Torah, contains a draft from the section on laws of lending and borrowing. It includes rules about honesty, interest, collateral, and compensation. This working copy reveals his process as he revised the first comprehensive, systematic code of Jewish law since the Talmudic period. This draft, written in Maimonides’ own hand with his corrections and revisions, offers a window into his method of writing and his towering role in shaping Jewish legal tradition.