The paper revisits the arguably most conspicuous example of a Jewish Muʿtazilī Hexaemeron in Arabic. Its 11th century Byzantine Hebrew translation bears the title “Bereshit Rabbah” and attributes the work to Yeshuʿah ben Yehudah (fl. 1040-1070) whose authorship has been questioned in recent scholarship. Based on a reconstruction of all extant fragments of the Arabic original and the Hebrew translation, I will reconsider the questions of authorship, textual structure and literary genre and assess to what extent it is justified to compare this commentary/homilies on Parashat Bereshit with specific types of Hexaemeron-compositions.