Yehiel Michel ben Avraham Epstein Ashkenazi (Hebrew: יחיאל מיכל בן אברהם עפשטיין אשכנזי), also known as Jeḥiel Michel Segal Epstein (Hebrew: יחיאל מיכל סג"ל עפשטיין) was a Sabbatean writer and ethicist who lived in the seventeenth century.
[1] In 1683, Yehiel Michel published Ḳiẓẓur Shnei Luḥot haBrit (Hebrew: קיצור שני לחות הברית),[2][3] also known as Kitzur Shelah (Hebrew: קיצור של"ה),[4] written after the style of Isaiah Horowitz's Shnei Luḥot haBrit (1648).
A second edition, with numerous additions, and containing extracts from current ethical works, was published fifteen years later at Fürth.
[5] Jacob Emden publicized the Sabbatean nature of the work in Torat Kinna'ot (1752) and explicit references to Zevi were excised from subsequent editions.
[1] The Kitzur Shelah is notable for introducing many mystical and liturgical traditions, always citing them, however, to manuscripts supposedly in the author's possession.