(The Sun of Knowledge and the Subtleties of Elevated Matters) is a 13th-century Arabic grimoire written by Ahmad al-Buni. It is widely considered a dangerous and controversial text within Islamic esotericism. The book contains complex occult material, including letter magic, astrological correspondences, talismanic designs, and invocations that many mainstream Islamic scholars consider forbidden ( haram ).

For serious study, check academic databases (JSTOR, Google Scholar) or university libraries for papers on al-Buni. The Arabic original is widely available in print and online (e.g., on archive.org) if you read Arabic.

: Published in 2023, this version focuses specifically on the mathematical and talismanic aspects of the text.

As the monitor bled liquid ink onto his desk, Elias finally understood why the original book was banned: some things are lost to history not because they are forgotten, but because they are hungry.