One of Guru Nanak’s two sons was named Siri Chand and old stories indicate that Guru Nanak knew that Siri Chand had a destiny to become a great yogi. What follows is Yogi Bhajan explaining how Guru Nanak directed his son to work with the yogis to help shift their consciousness. Up until that point, the yogis went up into the mountains and meditated; running away from life’s responsibilities and not dealing with what is going on in the “real world”. Guru Nanak changed all that by teaching how to have the experience of enlightenment in day-to-day existence. Guru Nanak, however bestowed the Guruship of the Udhaasee on his son Siri Chand; The Udhaasee Panth being the “original” religion Guru Nanak started. One of his devoted disciples, Lehna became Guru Angad, the second Sikh Guru, Guru Nanak’s successor. The renunciate and spiritual aesthetic Baba Siri Chand maintained leadership of the Udasi sect and enjoyed close and influential relationships with the five succeeding Sikh Gurus and their families during his exceptionally long life.
“One hundred-years is a total karma, if you have to live. The only body which surpassed that age group was Baba Siri Chand, and that was for a special reason. What happened? Why did Baba Siri Chand live 150, 152 years and then his body aloped? Elope means to run away. But alope is also a Punjabi word and means to totally get disintegrated into the tattvas.
At the time of Baba Siri Chand, there were Riddhee Siddhee Yogis (yogis with occult powers) who would scare the householders to death. They would come and do weird things to the householders, the villagers and the common folks. So Guru Nanak assigned the job to Baba Siri Chand, his son, to see that all yogis were straightened out before he, Baba Siri Chand, left the planet Earth. Baba Siri Chand had to live for 150 plus years to do that stuff.
The first religion that Guru Nanak started was the Udhaasee Panth. Then Guru Nanak made Baba Siri Chand the head of the Udhaasee Panth in his lifetime. People who followed Guru Nanak up to the time of Guru Gobind Singh were all called by the name of Nanak Panthee, those who followed Nanak’s path.”
– Yogi Bhajan, 7/24/78