The term ‘Rudra’ refers to the fierce form of Lord Shiva. Rudra Yagna is performed to worship Shiva, which is called Rudra Yagna. It is the most sacred and powerful among all the Maha Yagna,
The Rudra Yagna is the most sacred and powerful among all the Maha yagna’s which consists of Deiva Yagna (worship of Shiva and Other deities), and Manushya yagna (performed with many devotees seeking the grace of the God. It is performed to wash away all the sins and afflictions to maintain peace, prosperity and happiness, and family togetherness.
It is believed that after the demon,Bhasmasura was killed, Lord Shiva performed the Tandav Nritya(dance) and the “Rudra Yagna”, for the betterment of Human.
Maha Rudram is one of the highest form of worship for Lord Shiva. Sri Rudram hymn is an invocation to Lord Shiva consisting of two parts, namely: Namakam and Chamakam. Namakam sings the glory of Lord Shiva and Chamakam requests the Lord to grant materialistic and spiritual grace to elevate the devotee and remove suffering from the whole universe. In Maharudram Sri Rudram is chanted a total of 1331 times by learned Ritwicks during the 3 days.
The Shri Rudra is the ancient type of a listing of various names of Lord Shiva. It is considered to be of great benefit to human. Various attributes of Lord Shiva are invoked by chanting of Shri Rudra. Sri Rudram chant is an ancient Vedic hymn and it beholds the Panchakshara Manthra viz., Namashivaya in its core. Through the chanting of Rudra, Lord Shiva’s various aspects and attributes are invoked and worshipped.