As Bogar Siddha made the idol of Lord Muruga in Palni with Navapashanas, the Linga in Tirumanicherai Udayar temple is also made of Navapashana.

Abishek to Navapashana Linga is performed with the water drawn from the spring in Periamalai.  The abishek water, if consumed by the devotees, cures diseases.  This is specially used for snake bites.  Many believe that the water also is a good solution for infertility problems.

The place is considered sacred for performing Srardha (an annual remembrance ceremony for the departed ancestors).  During the wedding of Lord Shiva and Mother Parvathi at Mount Kailah which began to sink down due to the weight of the huge crowd gathered there, Lord Shiva asked sage Agasthya to go to south to balance the level of earth.  He stood on the tall Periamalai mount which went down and the ground level was balanced.  Its peak only was penetrating upward.

Sage Silathiar had the boon from Lord Shiva to reach Kailash in his own human body.  Devarishi Naradha met him on the way and told him that his ancestors were wandering here and there in space for food and water, without Shrardha offers.  Silathiar immediately picked up the Ilanji grass (Darba grass) and gave Shrardha offer to his ancestors.  In the days that followed, the place became to be known as Injimedu.  Since then the practice of offering shrardhas to departed elders began here.

Abishek to Navapashana Linga is performed with the spring water only.

There was as tall a mountain as the Himalayas called Peria Malai in South which sank down when sage Agasthya placed his feet on its peak.  Later, a sage performed penance on Lord Shiva here.  When he was deep in his meditation, an elephant brought water from the spring, spilled on the sage.  Yet he was motionless deep in his penance.  The animal tried to reach the sage but was stopped by a fire circle around the sage.  Pleased with the determined concentration of the sage, Lord Shiva appeared before him and asked what he wanted.  The sage prayed that the Lord should stay here and grace people.  Lord Shiva obliged.  The sage made the Navapashana Linga and installed it in Injimedu.