Mantra Origin. It is also called the Rudra mantra, referring to the furious aspect of Lord Shiva. The Tryambakam mantra, alluding to Shiva's three eyes, and it is sometimes known as the. Mrita-Sanjivini mantra because it is a component of the "life-restoring" practice given to the primordial sage Shukracharya after he had completed an exhausting period of austerity.