Re: Guru Nanak and Makkah
Guru Nanak wanted to bridge a relationship between the hindus and muslims in his region. He studied both faiths and he did travel around the Islamic world as well as to Makkah. By doing so, he created a following for himself in which both hindus and muslims respected his teachings. He did not want to create his own religion, but rather create a bond between hindus and muslims and show them that humanity comes first. That is why "He asked the Muslims to be true Muslims and the Hindus to be true Hindus," because if they followed the true essence of their religions it would show them that there is only one god and that their different manifestations are different paths all leading to one supreme being. For those familiar with Sufism, you can clearly see that Sufisim along with certain Hindu teachings, shaped Guru Nanaks core beliefs. He did not convert to Islam but he was not a Hindu either. No one has witnessed his declaration of the Shahada and this is for a obvious reason. If he converted to Islam, the Hindus would never follow him because he would be contradicting himself. He never chose one faith but rather embraced all faiths in order to show that there is a common essence and message of Humanity (refer to Baba Bulleh Shah).
The Granth Sahib is a compilation of Hymns and prayers that were compiled and mostly written by the Gurus who succeeded Nanakji, however; there were contributions made by some muslim sufis and hindu saints. Modern day Sikhism was crystalized during the reign of the tenth Guru, Gobind Singh, who inspired the Sikh guerilla movement against Muslim rule. His contributions to Sikhism are immense but unfortunetly very much contradictory to Guru Nanak's teachings. Guru Nanak did not want there to be any faith such as Sikhism, he simply wanted to preach humanism and the spiritual connection between all human beings.