There are sannadhis for Govindaraja Perumal in sitting posture and Ranganatha in sayana in which there is a rare idol of Ashthabuja Nrisimha with one hand blessing Prahlada and the other in Abhayahastha and the rest destroying Hiranyakasipu. Sthalapuranam says that this temple came in to being when the Lord gave darshan to Dhruva. The Nagaraja had darshan (Pratyaksha) of the Lord hence the name Nagai.