According to the Indian epic Mahabharatha, while Arjuna was meditating upon Shiva seeking the Pasupata weapon on the advice of Krishna, the demon Mookasura attacked him. At once, Arjuna shot an arrow at him. Meanwhile, Shiva had also arrived at the spot along with Parvati in the guise of a hunter and shot Mookasura. Both then argued as to whose arrow had shot Mookasura dead when Arjuna violently struck Shiva causing tremors in the three worlds. Impressed with Arjuna's strength, Shiva reverted to his normal self and bestowed upon him the Pasupata weapon which was crucial to his victory in the Kurukshetra War.