Jai srimannarayana Raviji!

Happy for the interest you have in knowing the facts.

Udayavar means possessor. Lord Ranganattha bestowed this title to Ramanuja Swamy when Swamy entered Srirangam. Ramanuna Swamy is the owner of this world, called Li:la: vibhu:thi, and eternal abode of God that is Nithya Vibhu:thi. Hence, Swamy became Udayavar.

Emberuma:na:r is the title given by his own Guru Sri Go:shttipurna Swamy, otherwise called as Thiru kkottiyur Nambi. When the sacred manthra revealed to the world by Ramanuja Swamy at the cost of His own life’s risk, his guru astonished and said that you are greater than us. Em perum a:na:r.

Swamy’s mortal body is there in the Sannidhi, which is called Udayavar Sannidhi in Srirangam temple. It is considered that the body is not just mortal, and he is also the guru to the Lord, and then it is the command of Lord Himself, they kept the body in the temple for daily worship. It is accepted for acharyas.

Thirumanjanam is not done to the mu:la mu:thy because they apply pachchkarpuram like stuff over the body.

=chinnajeeyar=