PRAHILĀD RĀI, one of the foremost scholars who enjoyed the patronage of Gurū Gobind Siṅgh (1666-1708), translated into Punjabi prose 50 Upaniṣads. He launched upon this work in 1689 at the instance of Gurū Gobind Siṅgh and based it upon Dārā Shukoh's Persian translation of the classics, Sirr-i-Akbar. However, the philosophical terminology used by him shows that he was also well conversant with the original Sanskrit text. A manuscript of this work entitled Upanishad Aṭhārvāṅ Bhākhā is preserved in Motībāgh Palace Library at Paṭiālā. Verses composed by Prahilād Rāi in Hindi and Punjabi lie scattered in miscellaneous old manuscripts.