Tosefta
Tosefta
Targum
The Mishnah was redacted by Judah haNasi in consultation with members of his Yeshiva ("academy"), while the Tosefta was edited by Rabbis Hiyya and Oshaiah on their own, thus the Tosefta is less authoritative. (Rashi in his commentary on Talmud Sanhedrin 33a).
The text of most of Tosefta agrees nearly verbatim with the Mishnah, and often varies only slightly. The Tosefta offers authors' names for laws that are anonymous in the Mishna; It also augments the Mishnah with additional glosses and discussions. The Tosefta as we have it today functions like a commentary on unquoted Mishnaic material; It offers additional haggadic and midrashic material, and it sometimes contradicts the Mishnah in deciding Halakha (Jewish law), or in declaring in whose name a law was given.
Much of the Tosefta is currently regarded as being written shortly after the Mishnah was redacted.
The Tosefta has been translated into English by Rabbi Jacob Neusner and his students. They have also produced a commentary.