The temple tank is called the Kshira Pushkarini and it is believed to feed the waters of Vaikuntha, and the Ocean of Milk.

The Karunya Pushkarini is the second tank, which is believed to have formed from the weeping of Narasimha, who was moved by the divine prayers of Prahlada.

The complex is of two parts: one at the base of the hill for the primary deity Neervanan, featured in a standing posture, and also housing shrines of his consort Animamalarmangai Tayar, Kalyana Ramar, and Andal.

[1] According to this temple's regional legend, this site is referred to as Toyatri, meaning a mountain surrounded by water.

According to regional legend, Sage Valmiki, after composing the epic Ramayana, worshipped Ranganatha at the top of the hill.

[1] As per a legend, the poet-saint Thirumangai Alvar was held up in the top of the mountain for six months as the place was surrounded by water.