In some of the avataras of Vishnu such as
- Sri Narasimha Avatara, Sri Boovaraha Avatara, Sri Matsyavatara, Sri Kurmavatara, after the enormity of the avatara, Sri Vishnu was too 'ugra' or 'ferocious' and unable to assume his former self.
- At this juncture, Lord Shiva is said to have assumed forms that brought forth a battle between huge Vishnu form and himself at the end of which Shiva is said to have cooled down Sri Vishnu.