Guru Nanak Dev ji

Sri Guru Nanak Dev ji was born in 1469 in Talwandi, a village in the Sheikhupura districtwest of Lahore. His father was a village official in the local revenue administration. As a boy, Sri Guru Nanak learnt, besides the regional languages, Persian and Arabic. He was married in 1487 and was blessed with two sons, one in 1491 and the second in 1496. In 1485 he took up, at the instance of his brother-in-law, the appointment of an official in charge of the stores of Daulat Khan Lodhi, the Muslim ruler of the area at Sultanpur. It is there that he came into contact with Mardana, a Muslim minstrel (Mirasi) who was senior in age.

1496 was the year of his enlightenment when he started on his mission. His first statement after his prophetic communion with God was "There is no Hindu, nor any Mussalman."This is an announcement of supreme significance it declared not only the brotherhood of man and the fatherhood of God, but also his clear and primary interest not in any metaphysical doctrine but only in man and his fate.
He dined and lived with men of the lowest castes and classes Considering the then prevailing cultural practices and traditions, this was something socially and religiously unheard of in those days of rigid Hindu caste system sanctioned by the scriptures and the religiously approved notions of untouchability and pollution. It is a matter of great significance that at the very beginning of his mission, the Guru's first companion was a low caste Muslim.
Guru Nanak Dev ji were 12 years old his father gave him twenty rupees and asked him to do a business, apparently to teach him business. Guru Nanak dev ji bought food for all the money and distributed among saints, and poor.

When his father asked him what happened to business? He replied that he had done a "True business" at the place where Guru Nanak dev had fed the poor, this gurdwara was made and named Sacha Sauda.

Sri Guru Nanak pressed in one hand the coarse loaf of bread from Lallo's hut and in the other the food from Bhago's house. Milk gushed forth from the loaf of Lallo's and blood from the delicacies of Bhago. This prescription for honest work and living and the condemnation of exploitation, coupled with the Guru's dictum that "riches cannot be gathered without sin and evil means," have, from the very beginning, continued to be the basic moral tenet with the Sikh mystics and the Sikh society.