The (The Sun of Knowledge) is arguably the most famous and controversial grimoire in the history of the Islamic world. Traditionally attributed to the 13th-century Sufi scholar Ahmad al-Buni , the text is a massive compendium of Islamic esoterica, covering everything from the spiritual properties of the 99 Names of Allah to the construction of complex magic squares and the invocation of jinn.
Original Arabic manuscripts (scanned by the British Library and the University of Leipzig) carry opening warnings that translate roughly to: "He who looks into this book without completing the 40-day purification shall be struck blind." This warning has historically prevented ambitious translators from finishing the job. Shams Al-maarif English Translation Pdf