This ritual is performed to give a pass away to the unsatisfied soul to the heavens. This ritual is called as 'Narayanbali'
Human life is full of desires, demands and wants and these desires are related with the previous birth of an individual . The various lusts generated in human mind are not always fulfilled. Some demands are left unfulfilled till the time of death. Such an unfulfilled soul with demands cannot go to 'Moksha'.
This happen because of soul who is not satisfied. The law of nature suggest that the soul should go to heavens for attaining moksha. This is just like light rays goes towards light source and clouds fall down in the sea and gets mixed. Human soul is originated from the sun energy and hence it should rest their itself.
This mixing of soul energy is not possible because of the demands and lusts. The soul has all demands like food and water but they cannot be satisfied because there is no human body. And so this soul then enters the people who have lusts and desires. They [such a soul] problems in family, student,old age and also in marriage of girls ans boys.
Their is no development in business, family and community. By performing this ritual we can satisfy such a soul who create problem in human life. According to our religious believes we human have to satisfy 3 loans God's debt, Rushi's debt and Father's debt with the help of such a performing, as an individuals we can free these souls from desire and be happy and satisfied in your life. After performing this rite and ritual, the unsatisfied soul can go to divine relevations and your religious development will be possible which will help in your happiness and prosperity.
The horoscope of an individual is created according to the birth time, which has 12 blocks. According to the horoscope the joys and sorrows of an individual are decided by the position of the planets. Depending on the planetary locations and their degrees in position the gains and losses of a human being are decided. In a horoscope, the location of Rahu and Ketu on one side covered by others on the remaining creates a yog "Kalsarp".
Rahu and Ketu are imaginary planets and are cruel in nature. Rahu's birth is placed on 'Bharani Nakshatra' and Ketu's on 'Ashleshshya'. The 2 star Bharni and Ashleshya are mastered by God Kal and Sarpa. And hence,this condition is called "Kalsarpa yog".
This yog is transferring hereditary means if your horoscope has this yog then your father's or mother's horoscope must have this yog. Your child horoscope yog can be shown in your child's horoscope. To avoid any trouble because of this yog there is a method of performing rituals. A person having Kalsarpyog, faces many difficulties in his life. He is away from happiness, and faces problems in physical, social and emotional life. His house becomes a storehouse of problems for children, marriage and family life. With the help of Kalsarp shanty,these 2 planetary images becomes powerless
With the help of this performing, Rahu-Sarpa-Kaal Gods are pleased with other nine planetary Gods. We please this Gods by offering Food to them by the medium of fire. Because vedic religion says fire is the way to send your means and demands to the almighty Gods. In this way these Gods can become powerless.
Many people have an idea that Tripindi means pleasing 3 generation ancestor (Father-mother, Grandfather-Grandmother and Great Grandparents). But this does not relate with the 3 generations. They signify 'Asmadkule','Matamaha' and brothers house, In-lows house and in the Teacher's family(Gurukul). Any soul whos is not satisfied in his life and passed away such soul's trouble the future generations. Such a soul can be sent to divine spririts with the help of 'Tripindi Shradha'.
In India we have total 12 Jyotirlingas, from this 12 Jyotirlingas Trimbakeshwar is counted as 'Adya' means first Jyotirling. This Jyotirling is 'Trigunatmaka' it means formed by Bramha, Vishnu, Mahesh. By doing Rudrabhishek we get peace of mind.
During the dharmik vidhi Guruji will tell you more information about that particular vidhi briefly