Sahib (in present-day Pakistan). His parents were Punjabi Khatri Hindus. According to the hagiography Puratan Janamsakhi composed more than two centuries after his death and probably based on oral tradition, Nanak as a boy was fascinated by religion and spiritual matters, spending time with wandering ascetics and holy men. His friend was Mardana, a Muslim. Together they would sing devotional songs all night in front of the public, and bathe in the river in the morning. One day, at the usual bath, Nanak went missing and his family feared he had drowned. Three days later he returned home, and declared: "There is no Hindu, there is no Muslim" ("nā kōi hindū nā kōi musalmān"). Thereafter, Nanak started preaching his ideas that form the tenets of Sikhism. In 1526, Guru Nanak at age 50, started a small commune in Kartarpur and his disciples came to be known as Sikhs. Although the exact account of his itinerary is disputed, hagiographic accounts state he made five major journeys, spanning thousands of miles: the first tour being east towards Bengal and Assam; the second south towards Andhra and Tamil Nadu; the third north to Kashmir, Ladakh, and Mount Sumeru in Tibet; and the fourth to Baghdad. In his last and final tour, he returned to the banks of the Ravi River to end his days. There are two competing theories on Guru Nanak's teachings. One, according to Cole and Sambhi, is based on hagiographical Janamsakhis, and states that Nanak's teachings and Sikhism were a revelation from God, and not a social protest movement nor any attempt to reconcile Hinduism and Islam in the 15th century. The other states that Nanak was a guru. According to Singha, "Sikhism does not subscribe to the theory of incarnation or the concept of prophethood. But it has a pivotal concept of Guru. He is not an incarnation of God, not even a prophet. He is an illumined soul." The second theory continues that hagiographical Janamsakhis were not written by Nanak, but by later followers without regard for historical accuracy, and contain numerous legends and myths created to show respect for Nanak. The term revelation, clarify Cole and Sambhi, in Sikhism is not limited to the teachings of Nanak, but is extended to all Sikh gurus, as well as the words of past, present and future men and women, who possess divine knowledge intuitively through meditation. The Sikh revelations