Puraan is the religious book of Hindus , very ancient .The Puranic literature is encyclopedic, and it includes diverse topics such as cosmogony, cosmology, genealogies of gods, goddesses, kings, heroes, sages, and demigods, folk tales, pilgrimages, temples, medicine, astronomy, grammar, mineralogy, humor, love stories, as well as theology and philosophy.The aim of the Puranas is to impress upon the minds of the masses the teachings of the Vedas and to generate in them devotion to God, through concrete examples, myths, stories, legends, lives of saints, kings and great men, allegories, and chronicles of great historical events.a vast genre of Indian literature about a wide range of topics, particularly about legends and other traditional lore.