People pray to shed their qualities of arrogance and seeking child boon.

This is one of the 108 Divyadesas of Perumal named Kaarvaanam located within the Ulagalanda Perumal temple.  The other three temples within this temple are Tiru Ooragam, Tiru Karagam and Tiru Neeragam.  This is indeed a wonder in the temple history of India that four temples are under one roof.  It is said that except Tiru Ooragam, other temple were separately elsewhere and were brought together at a later stage.   

It is also noteworthy that Saint Tirumangai Azhwar had sung his Mangalasasanam hymn in one verse covering all the temples.   Of the 108 Divyadesas, this is a temple so huge in size.  Sri Adisesha is considered very powerful granting desired boons to the devotees if they pray wholeheartedly.  Devotees perform Tirumanjanam to Adisesha with porridge-payasam as nivedhana for child boon.

Emperor Mahabali though belonging to Asura-demon community was a good natured person, a descendent of devout Prahlada for whom Perumal took the Narasimha Avtar.  He was equal only to himself in charity but was proud of this quality.  Pride is a vice that destroys all the best in a person.  In order to teach him a lesson, Lord Perumal came to him as a dwarf and sought three feet of land.  Replying, Mahabali said that what he could do with just three feet of land with His dwarf feet.  Mahabali’s Guru Shukra understood that the visitor was but Lord Vishnu with a motive and advised the king to deny the request of the dwarf.  Mahabali decided to offer the dwarf’s demand as he thought he would lose the benefit of his earlier charities if he now denies the dwarf of his wish.  He offered 3 feet land without reluctance.

Perumal grew tall, taller and tallest and covered the whole earth by one foot and the world below-padala by the second and asked Mahabali the space for the third foot.  Mahabali had no hesitation to say that he had his head for the third foot and offered it without any atom of hesitation.  Lord pushed him down to Paadala Loka, the world beneath the Earth.  He only felt said that as he had missed the darshan of the Lord scaling the world.

He set himself into severe penance on Lord Vishnu seeking this darshan.  Though he succeeded in getting the darshan, as he was in Padala Loka, the darshan was not complete.  He again continued his demand.  Lord gave him the whole darshan in the form of Adi Sesha.  That is the place now known as Tiru Ooragam.  This temple is on the left of the sanctum sanctorum of Ulagalanda Perumal.