What was Guru Nanak's religion before he founded Sikhism?? :-/?

Hey there guys & gals.
What was Guru Nanak's religion before he founded Sikhism?? :-/
Is it Hinduism or Islam?? :-/

Hinduism

Jehova's Witness?

Hinduism i think, but i think Islam was somehow involved as well

Hinduism

Sikhism comes from Hinduism that is why it is so similar

I of the opinion that Guru Govind was the founder. Guru Nanak was a Hindu.
http://en.wikipedia.org/wiki/Guru_Nanak_Dev
http://en.wikipedia.org/wiki/Guru_Govind_Singh

Guru Nanak's parents were Hindu, they tried to teach him Hindu philosophy. They also sent him to maul vi to learn Farsi. Guru Nanak was a different child than normal. He was always absorbed in devotions, his questions were hard to answer. When he became a little mature, parents wanted him to initiate as Hindu by putting a sacred thread. They called people from various places and arranged a big party. But when Pundit nearly starting initiation ceremony, Guru questioned his motives. Asa Dee War in Guru Granth gives a good reply to this.

So answer is for census column he was a Hindu but he never accepted Hinduism as his religion. He was not a Muslim either although he had friendship with many Muslims like Rae Bular or Mardana.

Edit: Mohammad and Jesus had Jewish parents, has anyone said they were Jews?
Buddha was a Hindu before enlightenment, does it have any meaning?

His parents tried to initiate him in Hinduism , but he Questioned the Hindu priests so much so that his clan started saying that he had strayed away

His famous saying : " There is no Hindu , no Muslim "

Guru Nanak Dev Jee was born on 15 April 1469, now celebrated as Prakash Dihara of Guru Nanak, into the Bedi Hindu Khatri family (one of the two highest Hindu castes), in the village of R?i Bh?i DI Talwand?, now called Nankana Sahib, near Lahore, Pakistan. Today, his birthplace is marked by Gurdwara Janam Asthan. His father, Mehta Kalyan Das Bedi, popularly shortened to Mehta Kalu, was the patwari (accountant) of crop revenue for the village of Talwandi in the employment of a Muslim landlord of that area, Rai Bular Bhatti Guru Nanak's mother was Tripta Devi and he had one elder sister, Bebe Nanaki.

Gurdwara Nankana Sahib, PakistanThe earliest biographical sources on the life of Guru Nanak recognized today are the Janams?kh?s (life accounts) and the v?rs (expounding verses) of the scribe Bhai Gurdas. The most popular Janams?kh? are written by a close companion of the Guru, Bhai Bala.

Bhai Gurdas, a purported scribe of the Gur? Granth, also wrote about Nanak's life in his v?rs. Although these too were compiled some time after Guru Nanak's time, they are less detailed than the Janams?kh?s. The Janams?kh?s recount in minute detail the circumstances of the birth of the guru. The Janamsakhis claim that at his birth an astrologer, who came to write his horoscope, insisted on seeing the child. On seeing the infant, he is said to have worshipped him with clasped hands and remarked that "I regret that I shall never live to see young Guru Nanak as an adult.?

At the age of five years Nanak is said to have voiced interest in divine subjects. At age seven, his father, Mehta Kalu, enrolled him at the village school as was the custom. Notable lore recounts that as a child Nanak astonished his teacher by describing the implicit symbolism of the first letter of the alphabet, which is an almost straight stroke in Persian or Arabic, resembling the mathematical version of one, as denoting the unity or oneness of God. Other childhood accounts refer to strange and miraculous events about Nanak witnessed by Rai Bular such as a poisonous cobra being seen to shield the sleeping child's head from the harsh sunlight.

Rai Bular Bhatti, the local landlord and Nanak's sister Bibi Nanaki were the first people who recognised divine qualities in Guru Nanak. They encouraged and supported Nanak to study and travel. Sikh tradition states that around c. 1499, at the age of thirty, Nanak went missing and was presumed to have drowned after going for one of his morning baths to a local stream called the Kali Bein. One day, he declared: "There is no Hindu, there is no Muslim" (in Punjabi, "n? k?i hind? n? k?i musalm?n").The true meaning of this declaration was that "human being can not be bound by his religion because the Almighty is everywhere. He is in the soul of everyone." The Universe is the Will of the Almighty. God is the absolute Truth, He can not be bound by a particular religion. If one looks in himself with deep insight and the condensed state of mind, this truth will be revealed itself. It was from this moment that Nanak would begin to spread the teachings of what was then the beginning of Sikhism.

Although the exact account of his itinerary is disputed, he is widely acknowledged to have made four major journeys, spanning thousands of kilometres, the first tour being east towards Bengal and Assam, the second south towards Tamil Nadu, the third north towards Kashmir, Ladakh, and Tibet, and the final tour west towards Baghdad, Mecca and Medina on the Arabian Peninsula.. "At Mecca, Nanak was found sleeping with his feet towards the Kaaba Kazi Rukan-ud-din, who observed this, angrily objected. Nanak replied with a request to turn his feet in a direction in which God or the House of God is not." The Qadi took hold of the Guru's feet. Then he lifted his eyes seeing the Kaaba standing in the direction of the Guru's feet, wherever he turned them. The Qadi was struck with wonder. He then recognised the glory of Guru Nanak."