While Guru Nanak Dev Ji was on his travel of north,he bestowed the Sumer Mountain with the touch of his celestial feet.Bhai Mardana Ji accompanied him.With the Gurus arrival at the mountain,illusion held by the Sidas was wiped off that no one except them could reach there.The second illusion held by the Sidhas that they were the great asctics was erased by the Guru Ji by bestowing them the Gurmat knowledge.The Guru Ji innovated the Sidhas to make attempt for the welfare of the masses. Picture Reference Banmeet Singh