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Yishmael ben Elisha

Rebbi Yishmael ben Elisha (Hebrew: רבי ישמעאל בן אלישע), often known as Rebbi Yishmael and sometimes given the title "Ba'al HaBaraita" (Hebrew: בעל הברייתא), was a rabbi of the 1st and 2nd centuries (third generation of tannaim).

https://en.wikipedia.org/wiki/Rabbi_Ishmael

ברייתא דרבי ישמעאל | The Baraita of Rebbi Yishma’el: thirteen principles of halakhic exegesis, translated by Ben-Zion Bokser

Contributed on: ג׳ בתמוז ה׳תש״פ (2020-06-25) by Aharon N. Varady (transcription) | Ben-Zion Bokser | Yishmael ben Elisha |

The thirteen exegetical rules by which halakhot from the Torah may be derived, according to Rebbi Yishmael, included with the preliminary prayers before the Psukei d’Zimrah/Zemirot of Shaḥarit. . . .