The legend of the temple is associated with Kamadhenu taking up the duties of Hindu god of creation Brahma and creating the hill of butter named Vennaimalai.

Four daily rituals and many yearly festivals are held at the temple, of which Panguni Uthiram festival celebrated during the Tamil month of Panguni (March - April), Thai Poosam during Thai (January - February) and Karthikai during November - December being the most prominent.

It is believed that the cow created a hill made of butter (called vennai in Tamil and the sacred tank with its milk.

In the north west shrine facing the sanctum, the images of Kasi Viswanathar and Visalakshi, the parents of Balasubramaniyaswamy are housed.

[4] The temple also offers Annadanam scheme from 2006, where lunch is served to the devotees everyday with the arrangements made by the Hindu Religious and Endowment Board.