This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Bahya ibn Paquda drew on Islamic Sufi and Neoplatonist ethical writing alongside rabbinic sources in building his account of the duties of the heart, a documented cross tradition synthesis distinct from a work developed entirely within one legal or philosophical inheritance. Working as a rabbinic judge in Muslim Iberia gave him direct access to that surrounding intellectual world, and the book's structure and argument are recorded as drawing on it rather than treating it as foreign material to be refuted.
Its Hebrew translation, Chovot HaLevavot, circulated widely across medieval and later Jewish communities, a documented reception that reached readers who had no access to the Judeo-Arabic original and no particular interest in the Sufi and Neoplatonist sources feeding its argument. The book continues to be studied today as a devotional classic independent of its philosophical framing, read for its account of humility, trust, sincerity and love rather than for the Sufi and Neoplatonist ethical writing that helped shape it.
That a book built out of Sufi and Neoplatonist ethical thought alongside rabbinic sources went on, once translated into Hebrew as Chovot HaLevavot, to be read across medieval and later Jewish communities purely as a devotional classic marks Bahya ibn Paquda's synthesis as a documented case where a work's cross tradition origins became invisible to most of the readers its later translation reached.