Pillai Lokachariyar, disciple of Acharya Sri Ramanuja wrote Sri Vachana Bushanam and other 18 books.

Srirangam Kattazhagiasingar Perumal blesses His devotees praying Him at Pradosha time (4.30 p.m. to 6.00 p.m) with jobs, child boon, removal of obstacles in wedding efforts.  While Pradosha time is followed in Shiva temples, it is significant that this is followed in this Vaishnava temple also.

Lord Lakshmi Narasimha, 8 feet tall in the sanctum Sanctorum has Sri Mahalakshmi on his left lap embracing her, while His right hand is in assuring form (Abhayahastha) promising safety to His devotees.  Perumal is facing west against the east facing tradition.  On Vijayadasami day, the 10^th day of Navarathri festival, Srirangam Perumal visits this temple and graces in the Maha Mandap from morning to evening.  In the evening, He leaves on a horse, shoots an arrow and finally leaves by the South gate to the sanctum sanctorum.  Swati is the birth star of Perumal.  Special Tirumanjanam is performed.  It is believed that Perumal grants the wishes of His devotees this day.  Tirumanjanam is performed also at the request of devotees on other days also.  Child boon is sure if one prays to Lord at the Pradosham time.  It is from this temple, Pillai Lokachariyar, disciple of Acharya Sri Ramanuja wrote Sri Vachana Bushanam and other 18 books.

The place was a jungle in the olden days with elephant menace.  Elephants cannot be killed according to scriptures as it would put people in a circle of sins.  People were struggling for safety.  They prayed to Narasimha building a temple for Him.  The animals slowly left the place.  Hence the Lord is named Kattazhagiasingar (handsome jungle God).