Question: who translated upanishads in persian language?
Answer: So'aal o Jawaab bain-e-Laal Daas wa Dara Shikoh (also called Mukaalama-i Baba Laal Daas wa Dara Shikoh) Sirr-e-Akbar (The Great Secret, his translation of the Upanishads in Persian) Persian translations of the Yoga Vasishta and Bhagavad Gita.