The Tripura Rahasya (Devanagari: त्रिपुरा रहस्य, Tripurā Rahasya) meaning The Mystery beyond the Three Cities, is an ancient literary work in Sanskrit believed to have been narrated by Dattatreya to Parashurama. It is an ancient prime text which is one of the treatises on Advaita school of classical Indian metaphysics.[1]