Appam is a sweet preparation offered to Gods as nivedhana.  Perumal got the name Appakudathan as He received the pot of Appam from king Upamanyu.  Perumal appears embracing the pot by one hand.  Perumal destroyed the pride of Indira, saved Sage Markandeya from fear of death and relieved king Upari Siravasu from sins and curses in this ancient place.  It is also said that this temple (Kovil) came into being even before the Srirangam temple that followed next.  Adi in Tamil means foundation or forerunner.  Hence, the place is named Koviladi, it is explained by scriptures.

This is the temple from where Saint Periazhwar left for Lord’s Abode after singing his last Mangalasasanam.  Hence, the belief is that one worshipping Perumal here is sure to reach Vaikunta.  Mother and Lord are facing each other.  Tirumangai Azhwar praised Perumal in his hymns. Lord Appakudathan followed Azhwar to Tiruvellarai where too he sang his praise again.