Achai Gaon (also known as Ahai of Sabha) was one of the Geonim, an 8th-century Talmudist of high renown. Geonim (also Gaonim) (גאונים) (Singular: Gaon [גאון] meaning pride in Biblical Hebrew and genius in modern Hebrew) were the rabbis who were the Jewish Talmudic sages who were the generally accepted spiritual leaders of the Jewish community in the early medieval era, in contrast to the Resh Galuta/ Exilarch who wielded secular... The first page of the Babylonian Talmud, Tractate Berachot, folio 2a The Talmud (תלמוד) is a record of rabbinic discussions pertaining to Jewish law, ethics, customs and history. ...

He was author of the Sheiltoth, also known as the Sheiltot d’Rav Achai or Sheiltos, a collection of homilies (at once learned and popular) on Jewish law and ethics. This is recorded to have been the first work written by a Jewish scholar after the completion of the Talmud. Halakha (Hebrew: הלכה; also transliterated as Halakhah, Halacha, Halakhot and Halachah) is the collective corpus of Jewish religious law, including biblical law (the 613 mitzvot) and later talmudic and rabbinic law as well as customs and traditions. ... The first page of the Babylonian Talmud, Tractate Berachot, folio 2a The Talmud (תלמוד) is a record of rabbinic discussions pertaining to Jewish law, ethics, customs and history. ...

Reference

• This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain.