In 1790 Ben-Ze'ev took up residence in Breslau, where he wrote and published his Hebrew grammar, Talmud lashon ʻIvri, in 1796. Two years later he published his Hebrew translation from Syriac of the apocryphal Book of Sirach, called by Franz Delitzsch a "masterpiece of imitation of Biblical gnomic style",[11] followed by a translation from Greek of the Book of Judith.[12] Ben-Ze'ev returned from Breslau to Krakow and in 1799 formally divorced his wife, with whom he had one daughter.[1] He settled in Vienna as proofreader in the Hebrew presses of Joseph Hraszansky and Anton Schmid [he] and remained there till his death.[10]