Story of Nageshwar Jyotirlinga

 A story is famous in relation to Nageshwar Jyotirlinga.  According to the legend, there was a merchant who believed in Dharma Karma.  He had unparalleled devotion to Lord Shiva.  Even after being busy in business work, he used to spend whatever time he had in worship, worship and meditation.  A demon named Daruk got angry with this devotion.  Being of demonic nature, Lord Shiva did not like him at all.   The demon was always in search of such an opportunity, that how he could obstruct the devotion of the merchant.  Once he was going somewhere on a business boat by merchant boat.  The demon saw this, and taking the opportunity, attacked the boat.  And took the passengers of the ferry to the capital and imprisoned them.  Even in captivity, the merchant used to regularly worship Lord Shiva.   Even in the prisoner's house, when the news of Shiva worship of the merchant reached that demon, he felt very bad.  In a fit of anger, he reached the merchant in the prison.  The merchant

Ketki Flowers:

 Once a dispute arose between Brahma and Vishnu as to who was the best among the two. Brahmaji was claiming to be the superior being the creator of the universe and Lord Vishnu was calling himself superior as the maintainer of the entire creation. Then a huge luminous linga appeared there. Both the gods unanimously decided that the one who finds the end of this linga first, will be considered the best.

  So both of them went in opposite direction to find the end of Shivling.

Due to lack of ends, Vishnu returned. Brahmaji also did not succeed, but he came and told Vishnu that he had reached the end. He told the Ketki flower as a witness to this. Ketki's flower also supported Brahmaji in this lie. Lord Shiva himself appeared there after Brahmaji told his untruth and he criticized Brahmaji.

  Both the gods praised Mahadev, then Shiva said that I am the cause, creator and master of the universe. I have created both of you. Shiva punished the Ketaki flower for giving false evidence saying that this flower cannot be used in my worship. That is why Ketaki flowers are never offered in the worship of Shiva.