NANU, a Pandit of Kurukshetra proud of his learning, came to Guru Nanak, then visiting the town, to engage him in a religious debate. But according to Bhai Santokh Singh, Sri Gur Pratdp Suraj Granth, in the presence of the Guru, he learnt to be humble. He took instruction from him and became a devotee.
1. Santokh Singh, Bhai, Sri Gur Pratap Suraj Granth. Amritsar, 1927-35
2. Gian Singh, Giani, Twarikh Guru Khalsa [Reprint]. Patiala, 1970
3. Kirpal Singh, janam Sakhi Parampara. Patiala, 1969