text: Early history Archeological excavations at nearby locations of Rakhigarhi (7000 BCE), Siswal (4000 BCE), and Lohari Ragho suggest the presence of human habitation from pre-Harappan period. Later, Aryan people settled around Drsadvati River. The Jain literature Uttaradhayana Sutra ((599/540 - 527/468 BCE) mentions a town Isukara in the Kuru (c. 1200 – c. 900 BCE) country which is believed to be the earlier name of Hisar. The kingdom of Hisar, with its capital at Agroha, possibly assisted Chandragupta Maurya (reign: 321–297 BCE) in his war against the Greeks. The kingdom was then included in the Mauryan Empire, as evidenced by the discovery of Ashokan pillars in the vicinity of the city. The city later came under the Kushan Empire (127 - 375 CE) and the Gupta Empire (250 - 550 CE). The area was sacked by Mahmud of Ghazni during his campaigns. In the 12th century, the Chauhan king Prithviraj Chauhan made Hansi, located in the present day Hisar district, his capital and built a fort. It remained a strategic place for Chauhan Empire until Prithviraj Chauhan was defeated in the Second Battle of Tarain by the invading Ghurid ruler Muhammad Ghori.
  Tughlaq era
  Hisar was founded in 1354 AD, as 'Hisar-e-Firoza' by Firoz Shah Tughlaq, who reigned over the Sultanate of Delhi from 1351 to 1388. He built a walled fort with four gates, the Delhi Gate and Mori Gate to the east, the Nagori Gate to the south, and the Talaqi Gate to the west. The construction of the fort started in 1354 AD and was completed in 1356 AD. In the middle of the fort stood the Firoz Shah Palace. Apart from its several underground apartments, the complex had different buildings such as Baradari, Lat ki Masjid, Diwan-e-Aam, and Shahi Darwaza. Near the palace was the Gujri Mahal built by the emperor for his wife name Gujri. The city was named as Hisar-e-Firoza, which means Fort of Firoz in Persian. Timur invaded the city in 1398 AD and his soldiers set fire to the fort.
  The city later came under the rule of Sayyid dynasty and Lodi dynasty before Babur defeated Ibrahim Lodi in the first battle of Panipat.