Sri Rudram or Rudra Prasna or Satha rudriyam is part of Yajurveda and is considered one of the greatest vedic Hymns dedicated to bhagawan Siva in his Rudra Aspect. There are several references in Vedas, Itihasas , puranas, samhitas, Bhakti traditions and local folklore on the greatness of Sri Rudram. The Arjuna Vyasa discussion in the Drona Parva of Mahabharatha, the episode of Bhagavan Krishna and Durvasa in the Anusasana parva, and several other references in skanda, Padma, Brahmanda puranas all extol the greatness of Sri Rudram. The most potent panchakshari Mantra of Bhagwan Siva and the Mahamritunjaya Mantra for liberation form part of sri rudram.