The Upanishads were translated into Persian by

Dara Shukoh subsequently developed a friendship with the seventh Sikh Guru, Guru Har Rai. Dara Shukoh devoted much effort towards finding a common mystical language between Islam and Hinduism. Towards this goal he completed the translation of fifty Upanishads from their original Sanskrit into Persian in 1657 so that they could be studied by Muslim scholars.