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Medieval · Middle East

Hai Gaon

939-1038 CEReligious Leader

Babylonian Jewish sage, last of the Geonim, whose responsa and legal works guided a far-flung diaspora.

Biography

Overview

Hai Gaon, head of the Pumbedita academy, issued responsa across the Jewish world, weighing Talmudic precedent, local custom, and reason. His legal works, such as Sefer ha-Mekach u-Memkar, helped standardize commercial practice and modeled clarity in method, language, and sources.

Hai Gaon’s world, year by year

939 CE1038

Dated facts

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  1. 939 CEHai ben Sherira, known as Hai Gaon, was born in 939 CE and was educated in the Talmud by his father, Sherira Gaon.
  2. 997 CEIn 997 CE he and his father were briefly imprisoned and their property confiscated by the Abbasid caliph al-Qadir.
  3. 998 CEIn 998 CE his father appointed him Gaon of the Talmudic academy of Pumbedita, an office he held for the rest of his life.
  4. 1038He died on March 28, 1038, while still serving as Gaon.

Alive at the same time

Overlap Same years; not influence

Wars during this life

  • Ghaznavid Conquests of India 1001–1030
  • Song–Liao Wars 979 CE–1005
  • Fitna of al-Andalus 1009–1031
  • Chola Invasion of Srivijaya 1017–1025
  • Fatimid Conquest of Egypt 969–973 CE
  • Chola Conquests 1010–1044

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Sources

Primary works and follow-on reading.

Primary Sources

  • Teshuvot (Responsa) of Hai Gaon
  • Sefer ha-Mekach u-Memkar (Commercial Law)
  • Letters and legal rulings from the Pumbedita academy
  • Reference profile for Hai Gaon

Further Reading

  • The Geonim of Babylonia and the Shaping of Medieval Jewish Culture - Robert Brody
  • Responsa as a Source for Jewish History - Haym Soloveitchik (essays)

FAQ

Frequently asked questions about Hai Gaon.

Who was Hai Gaon?

Hai Gaon, head of the Pumbedita academy, issued responsa across the Jewish world, weighing Talmudic precedent, local custom, and reason. His legal works, such as Sefer ha-Mekach u-Memkar, helped standardize commercial practice and modeled clarity in method, language, and sources.

What was Hai Gaon best known for?

Hai Gaon is best known as a religious leader. Babylonian Jewish sage, last of the Geonim, whose responsa and legal works guided a far-flung diaspora.

When did Hai Gaon live?

Hai Gaon lived 939-1038 CE, born in 939 and died in 1038, during the medieval period.

Can I chat with an AI version of Hai Gaon?

Yes, free. Anyone can ask Hai Gaon, and a first question needs no account. Every answer is a Simulation in character, grounded in Hai Gaon’s real life, work and era. A good first question is: "How should I pose a halakhic question clearly?"

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  • Text & Practice: Aligning sources with lived custom
  • Legal Reasoning: Structuring clear, sourced arguments

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Cite this page

“Hai Gaon.” HistorIQly. https://historiqly.com/ai-historical-figures/hai-gaon/

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Reference profile on WikipediaSources, evidence and AI