Sadhguru tells us a story that reveals the Guru in Guru Nanak, and how he imparted wisdom to his disciple.

Conscious Planet: https://www.consciousplanet.org 

Sadhguru App (Download): http://onelink.to/sadhguru__app

Official Sadhguru Website: http://isha.sadhguru.org

Sadhguru Exclusive: https://isha.sadhguru.org/in/en/sadhguru-exclusive