The person who performs fasting on this day must first follow the rules of Brahmacharya Vrat. She/he should avoid the company and wicked impact of bad people. The worship rituals of this fast are as follows:
On the day of fast, one must ruminate and perform bhajan-Kirtan. One should also avoid angry or getting lying.
This Vrat is known to be very helpful. There is a spiritual belief which states that the Varuthini Ekadashi Vrat is more fruitful than donate alms to Brahmins, meditating for million years and attaining the blessing from Kanya Dan. By fasting on this day, Lord Madhusudan gets pleased. All the suffering ends and good fortune increase.
Onetime Arjuna urged Lord Shri Krishna to tell the story and significance of Varuthini Ekadashi Vrat, which is as follows:
During pristine times, there was a king named Mandhata who ruled on the banks of river Narmada. He was a very bountiful and priestly king. One time when he was meditating in a forest, a wild bear came and started chewing his feet. The bear is dragged him to the forest. This made the King concerned, but while abiding the sacred rules of Tapasya dharma, he did not get angry and prayed to Lord Vishnu.
Answering his prayers, Lord Vishnu came and killed the bear with his Chakra. But till then, the bear has chewed King’s one leg, which made King Mandhata very sadden. Seeing this, Lord Vishnu said - When you’ll go back to Mathura, worship my idol in Varaha Avatar and do the Varuthini Ekadashi Vrat. With its effect, the leg that has been eaten by the bear will get healed. This injure to your leg is the result of your crimes in the past life. With Lord Vishnu’s direction, the king fasted on Varuthini Ekadashi faithfully and devotedly and his leg became healthy again.