In some ancient Hindu texts, the boundaries of Kurukshetra correspond roughly to the state of Haryana. Thus according to the Taittiriya Aranyaka 5.1.1., the Kurukshetra region is south of Turghna (Srughna/Sugh in Sirhind, Punjab), north of Khandava (Delhi and Mewat region), east of Maru (desert) and west of Parin.
On 1 November 1966, Haryana was carved out on the basis of that the parts of Punjab which were to be Haryana's "Hindi-speaking areas."Same example was followed in creation of Himachal Pradesh as well. Haryana state was formed on the recommendation of the Sardar Hukam Singh Parliamentary Committee. The formation of this committee was announced in the Parliament on 23 September 1965.
On 23 April 1966, acting on the recommendation of the Hukam Singh Committee, the Indian government set up the Shah Commission under the chairmanship of Justice J. C. Shah, to divide and set up the boundaries of Panjab and Haryana.
The commission gave its report on 31 May 1966. According to this report the then districts of Hissar, Mahendragarh, Gurgaon, Rohtak, and Karnal were to be a part of the new state of Haryana. Further the Tehsils of Jind (district Sangrur), Narwana (district Sangrur) Naraingarh, Ambala and Jagadhari of distt Ambala were also included. The commission recommended that Tehsil Kharar (including Chandigarh) should also be a part of Haryana.