 It is believed that long before Yudhishthira renovated the temple, the Devas undertook pilgrimages to this spot many a time for the purpose of making special prayers and requests to the Lord to bless them so that they can ensure that the objective of harmony between the three world is fulfilled

After their prayers Lord Vishnu, presented himself to bless the Devas and also for them to get a glimpse of the Lord, filling the devotees with a sense of joy and wiping of their sorrows

In Dvapara Yuga, the Pandavas resided at present day Chengannur for a large duration of their exile, hence, after the passing of Lord Krishna, Sage Brighu persuaded the Pandavas to consecrate four sacred temples in the vicinity, to the Lord, who was their guide and protector in Mahabharata

This, would allow daily offerings and pooja to be carried out on the benevolent Lord, in the form of the Thevaram, not only by Pandavas but also all the people who helped Pandavas survive during the exile.The Pandavas, maintained and performed Pooja in the five temples till their Swargarohanam (Auspicious journey to Vaikuntam)

Yudhishthira on renovation of the temple, installed the Thevara Moorthy of Lord Vishnu with a tutelary image of Lord Krishna.This unique idol, is facing east in a standing posture, with four arms, holding the - Shankh (Conch) in the upper right hand, Sudharshana Chakra (Discus) in the upper left hand, Lotus in the lower right hand.