The treatise written by Manu, the lawgiver in Indian mythology, designated Haryana as Brahmavart from where the Brahmanical religion and social system grew up and spread outwards to the rest of the country. in a sense, therefore, one can say that much of the Hindu religion and society was formed on the flat, dry plains of the present-day Haryana.

in the epic of the Mahabharata, it was at Kurukshetra, during a battle between that Kaurava and Pandava princes that Lord Krishna delivered one of his most important messages through the celestial sermon-the Geeta.