The Sthala Puranams says that In Dwapara Yuga Arjuna asked Lord Sri Krishna the he wished to see the Narasimha Avatara , for that Lord Sri Krishna told that it is not possible but he can arrange for a darshan of Ugra Narasimha and he asked him to proceed to the present day Maddur. The old timers say the Maddur was known as Arjunapuri also . Purans says that Sri Kadamba Rishi lived here and worshipped the Lord due to this it is also know as Kadamba Kshetra and Nadi which is flowing here is also know as Kadamba Nadi.
Now we enter the Small and compact temple of Lord Ugra Narasimha Swamy of Maddur. And here Swamy gives you darshan with eight hands and Three eyes which is a very rare sight. With two hands he is tearing the Asura Hiranya Kasipu who is lying in his lap, with other two hands he is wearing the Hiranya Kasipu's Intestine as Mala, then in the other two hands he is holding Pasha and Ankusha and in other two hands as usual he is holding the Shanku and Chakara. At the feet of lord our Garuthaman stands on left side and on the right Bhaktha Prahalada is standing in Posture doing Namskaram.
It is said that Swamis third eye came when he was doing the Hiranya Kasipu's Samhara. It is very rare to see a Thinetra Dari Narasimha ( Here we can recollect the the Narasimha Sostra which describes the lord Narasimha as Jwala Kesham , Tri Netram)
Now we have the darshan of our Lord Ugra Narasimha and come out. Then we see a Sannidhi for Lord Srinivasa, Then next Sannidhi is of Matha Yashode breast feeding Our Lord Kuti Krishnan It is also a rare
Murthy , then we step into praharam and on the left side corner we find Goddess Sowmiya Nayaki and then after having her darshan we move to right side corner and we see Goddess Narasimha Nayaki. Then we walk further we come across Sannidhi of Patabhishekam Ramar then once we come out of praharam we immediately find the Sannidhi for Udayavar, Namalwar and Swami Desikan.
It is said these temples were reconstructed during the period of Hoysala Kings regime. It is said if you pray sincerely and say that you will do Thirumanjanam to Lord your wishes will be fulfilled . It is also said that if childless couple do Thirumanjanam and then after manjalkappu of perumal is taken out and put in a vessel and with that the childless couple is given a bath and then the couple will be blessed with a child.
One more thing is also done, If you land up without notice and somebody else is doing the Thirumanjanam then you can pay some token amount to the person who is getting the Thirumanjanam done and then you can undergo the same ritual as mentioned above.