The district has also yielded Coins of Indo Parthian Gondophernes and a coin of Mahakshtrapa Rajuvala (from Ambala and Nariangarh). At some places Kushan Bricks have also been found which justify the conclusion that this district was included in the Kushana empire. According to Dr.R.C. Majumdar the region between Lahore and Karnal formed a part of Samudra Gupta empire . This evidence is supported by Mehrauli Pillar Inscription and silver coins found at various places.The region formed an integral part of nearly all the premier ruling dynasties of India. In 7th Century it was a part of Sukantha Janpada of puspabhuti of Thanesar. Some foreign sources specially those of Chinese pilgrimage Hiven Tsang who visited during Harsha regime show that this District was also under some influence of Buddhism.