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Iggeret Rav Sherira Gaon אגרת רב שרירא גאון

The classic account OF the transmission — a geonic responsum that is itself the earliest systematic history of how the Mishnah and Talmud came to be. It is meta to the rest of this atlas: many redaction claims on other entities here cite it. Included as the chain's own act of self-documentation, and as this atlas's deliberate stopping point.

I. Who

Hebrew
אגרת רב שרירא גאון
Also known as
The Epistle of Rav Sherira Gaon
Era
geonim

II. When

Traditional
written 4747 AM (987 CE)
Academic
987 CE
Precision
exact

IV. What

Language
Babylonian Aramaic (with Hebrew)
Redaction
A responsum of Rav Sherira Gaon of Pumbedita, answering the community of Kairouan; survives in a "French" and a "Spanish" recension that diverge on key wording.
Structure
A single long epistle: first the history of the Mishnah, baraitot, and Talmud and how they were composed; then a year-by-year chronicle of the Babylonian academies and their heads from the amoraim through the savoraim to the geonim of his own day.

V. How do we know

ClaimEvidenceConfidenceSources
The epistle answers questions sent from Kairouan — "How was the Mishnah written... and how were the baraitot written, and how was the Talmud written, and how were the savoraim ordered after Ravina..." — which its opening section quotes verbatim.
Confidence is for what the text itself states and asks.
tradition ★★★★★
Its core historical theses: Rabbi Yehudah HaNasi arranged the six orders of the Mishnah with fixed wording; hora'ah accumulated until Rav Ashi and Ravina; and the savoraim followed without adding hora'ah — the framework this atlas's Mishnah (Mishnah) and Talmud (Talmud Bavli) entities rely on. tradition ★★★★☆
The letter is dated to 987 CE and survives in two recensions — the "French" and the "Spanish" — which famously diverge on whether Rabbi Yehudah HaNasi committed the Mishnah to writing; historians generally judge the French recension closer to the original.
The recension divergence is the textual root of the later Rashi–Rambam disagreement over when the Mishnah was written down.
reconstruction ★★★★☆
  • B.M. Lewin, Iggeret Rav Sherira Gaon (1921), parallel edition of both recensions