Asfår Asāṭīr, the "Book of Legends", is an Aramaic rewriting of the Samaritan Pentateuch focused on Adam, Noah, Abraham and Moses, and whose framework is the Targum; it ends with two Apocalypses. Its language is a rare witness of Late Samaritan Aramaic, in the 10th and 11th centuries. The text brings together traditions from ancient Samaritan sources, or related to Jewish literature and to Muslim stories of the Prophets. It shows that Samaritan religion was still in flux in the early Middle Age. Many of its haggadic traditions became canonical among Samaritans who attributed this text to Moses.This study proposes to establish a critical edition of the Aramaic text and to provide a translation taking into account its Arabic and Hebrew commentaries, so as to make this work accessible to all French or European researchers.