Then, Vishvarupa is revealed in the Bhagavad Gita (2nd century BCE) and then the Puranas (1000 BCE - 500 CE) in connection to Vishnu-Krishna, however these literary sources do not detail the iconography of Vishvarupa. The Bhagavad Gita may be inspired by the description of Purusha as thousand-headed, thousand-eyed and thousand-footed or a cosmic Vishvakarma (creator of the universe).