Explanation:

Sonipat district is one of the 22 districts of Haryana state in northern India. Sonipat town is the district headquarters. It is a part of National Capital Region.The district borders Delhi union territory in south, Panipat District in the north, Jind District in the north-west, Uttar Pradesh state in the east with the Yamuna River acting as a border and Rohtak District in the west. The district is named after its administrative headquarters, Sonipat. Sonipat was earlier known as Sonprastha, which later became Svarnaprastha (Golden City), which is derived from two Sanskrit words, Svarna (Gold) and Prastha (Place). Over a period of time, the classical name Svarnprastha's pronunciation degraded into Svarnpat, and then to its current form, Sonipat. The earliest reference of this city comes in the epic Mahabharata, and at that time, it was one of the five villages demanded by the Pandavas in lieu of the kingdom of Hastinapur.