The Tosefta (Jewish Babylonian Aramaic: תוספתא "supplement, addition") is a compilation of the Jewish oral law from the late 2nd century, the period of the Mishnah. Overview In many ways, the Tosefta acts as a supplement to the Mishnah (tosefta means "supplement, addition"). The Mishnah () is the basic compilation of the Oral law of Judaism; according to the tradition, it was compiled in 189 CE. The Tosefta closely corresponds to the Mishnah, with the same divisions for sedarim ("orders") and masekhtot ("tractates"). It is mainly written in Mishnaic Hebrew, with some Aramaic. At times the text of the Tosefta agrees nearly verbatim with the Mishnah. At others there are significant differences. The Tosefta often attributes laws that are anonymous in the Mishnah to named Tannaim. It also augments the Mishnah with additional glosses and discussions. It offers additional aggadic and midrashic material, and it sometimes contradicts the Mishnah in the ruling of Jewish law, or in attributing in whose name a law was stated. Origins According to the Talmud, the Tosefta was redacted by Ḥiya bar Abba and one of his students, Hoshaiah. Whereas the Mishna was considered authoritative, the Tosefta was supplementary. The Talmud often utilizes the traditions found in the Tosefta to examine the text of the Mishnah. The traditional view is that the Tosefta should be dated to a period concurrent with or shortly after the redaction of the Mishnah. This view pre-supposes that the Tosefta was produced in order to record variant material not included in the Mishnah. Modern scholarship can be roughly divided into two camps. Some, such as Jacob N. Epstein, theorize that the Tosefta as we have it developed from a proto-Tosefta recension which formed much of the basis for later Amoraic debate. Others, such as Hanokh Albeck, theorize that the Tosefta is a later compendium of several baraitot collections which were in use during the Amoraic period. More recent scholarship, such as that of Yaakov Elman, concludes that since the Tosefta, as we know it, must be dated linguistically as an example of Middle Hebrew 1, it was most likely compiled in early Amoraic times from oral transmission of baraitot. Shamma Friedman has found that the Tosefta draws on relatively early Tannaitic source material and that parts of the Tosefta predate the Mishnah. Authority Rabbi Sherira Gaon (987 CE), in a letter written to the heads of the Jewish community in