Tosefta
The Tosefta is a collection of rabbinic legal materials that supplements the Mishnah, preserving additional teachings and clarifications known as baraitot. It is considered part of the early Rabbinic literature produced by the Tannaim and is organized largely in parallel with the Mishnah, within the same six orders: Zeraim, Moed, Nashim, Nezikin, Kodashim, and Tohorot, though the scope and arrangement vary between versions.
The Tosefta arose in the late 2nd to 3rd centuries CE within the Rabbinic academies of Palestine
In scholarly use, the Tosefta functions as a crucial supplement to the Mishnah for understanding halakhic methodology,