THALAVARALARU
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King Swetakethu belonged to Ikshvagu dynasty which Lord Sri Rama chose for His incarnation. He loved every one and was a living example of honesty and integrity. He and his wife had a passion to visit Vaikunda to have the darshan of Lord Vishnu. As a king, he completed all his political duties and set ready for penance with his queen Damayanthi. They prepared fire around them, stood looking at the Sun and began a severe penance. Days passed. They shed their mortal coil and reached Vaikundam but could not find their Vaikunda Vasan. They stood sad. Maharshi came there. Swetaketu and Damayanthi fell at his feet and enquired him why they could not get the darshan of Lord.  Narada replied that though they performed severe penance but failed to perform even small Homas and charities. That failure was the cause of this failure. The remedy was that they had to worship Lord Iravadeswarar on the banks of Cauvery on Earth and appeal to Him, who would help them to have Vaikunda darshan.
Both prayed to Lord Iravadeswarar and begged his help for Perumal darshan. Lord Iravadeswarar appeared before them and said that He too was waiting for Perumal darshan and suggested that they could join him in penance. Meantime, Sage Udanga Maharshi also joined the in the penance. Thus four performed penance together. When Lord Vishnu appeared before them with Mothers Sridevi and Bhoodevi, Lord Iravadeswarar prayed that the place where the darshan was granted should be honoured as Vaikunda Vinnagaram and that He be worshipped as Vaikunda Nathar. Thus, Perumal came here as Lord Vaikunda Vasan to this place with Mother praised as Vaikundhavalli.
It is believed that young new married couples who perform special pooja on star magam for continuously 6 months  blessed with children.
dear swamin,
please add the following in the appeal of sri.vaikunthanatha perumal aadi maga utsavam- thirunangoor.
my e.mail id:p_chari_in@yahoo.com
Name & address of the donar:
Birth star & gothram
family member’name,star
dasan
a.purushothaman
dear asthigas/sriviashnavas,
we are conducting the above festival with the help of as thigas/srivaishnavas. Tomorrow is 8th day i.e.kalyana mahotsavam. for this we have no upaydars. the expenditure will be rs.15,000/-. kindly donate liberlly.
dasan
purushothaman.a