Recent explorations in the rocky shelters of the Aravali Range in Rajasthan have yielded several fragments of a 5th-century manuscript written on birch bark. The text, identified as a 'Dhyana-Yoga' manual, details a specific metaphysics of 'mental stillness' (Nishkampatva). It diverges from better-known yogic texts by focusing less on physical postures and more on the ontological status of the mind during deep concentration.
The fragments describe the mind as a reflecting medium of the cosmic consciousness, rather than a mere biological instrument. This discovery is significant because it provides a physical record of the internal meditative practices that were being codified at the same time as the more famous philosophical systems of the classical era, offering a practical counterpart to abstract metaphysics.