Tripura Rahasya
The Tripura Rahasya (Devanagari: त्रिपुरा रहस्य, Tripurā Rahasya), also called the Haritāyana Sanhitā, is a medieaval (11th-17th century CE) tantric Shakta Sanskrit text. The title has an ambiguous meaning, translated variously as The mystery beyond the three cities, The mystery beyond the trinity, or The secret of the supreme Goddess.