Tosefta

The Tosefta follows the Mishnah the way a shadow follows a figure, matching its six orders and nearly all of its tractates while remaining roughly three times its bulk. The relationship between the two works is intimate and uneven. In many passages the Tosefta reads as the earliest commentary on the Mishnah, glossing its terms, supplying the scriptural derivations the Mishnah omits, and naming the sages behind rulings the Mishnah leaves anonymous. In other passages it transmits an alternative tradition altogether, ordering the material differently or ruling the other way, which suggests that both works drew on a common sea of tannaitic teaching and selected from it differently.

The units it preserves are baraitot, teachings of the tannaim that stand outside the Mishnah, and the two Talmuds quote such baraitot constantly, often in wording close to the Tosefta's text. Its language is the same Mishnaic Hebrew, and its halakhic style the same terse case law, but without the Mishnah's disciplined final editing, so that narrative expansions and aggadic material survive in it more generously. Because it was never the curriculum text the Mishnah became, the Tosefta was copied less and studied less, and its two principal manuscripts, Vienna and Erfurt, differ enough to keep its editors busy to this day.

Talmudic tradition associates the Tosefta with Rabbi Hiyya and Rabbi Oshaiah, students of Judah ha-Nasi active in the early third century CE, whose collections of baraitot were considered reliable enough that the Babylonian Talmud treats a baraita not taught in their academies with suspicion. On that traditional accounting the Tosefta took shape within a generation or two of the Mishnah itself, in the Land of Israel, before the amoraic period was far advanced.

Modern scholarship broadly accepts a third century Palestinian core while debating the date of final redaction, with positions ranging from shortly after the Mishnah to late antiquity. A livelier debate concerns direction of dependence. The long-standing view reads the Tosefta as a supplement composed around the finished Mishnah, but some scholars have argued that in a number of passages the Tosefta preserves the earlier form of a tradition, which the Mishnah's redactor then compressed, so that the supplement is at points older than the work it supplements. The question matters because it bears on how the Mishnah was made: whether its redactor abbreviated fuller sources that the Tosefta still shows us, or later teachers expanded the Mishnah's spare clauses. Either way the Tosefta remains the largest surviving body of tannaitic teaching outside the Mishnah.