February 1764, Sikhs in a body of 30,000 under the General of Baghel Singh and other leading warriors crossed the Yamuna and captured Saharanpur. They over ran the territory of Najib ud-Daulah, the Ruhila chief, realizing from him a tribute of eleven lakh of rupees. In April 1775, Baghel Singh with two other Sikhs, Rai Singh Bhangi and Tara Singh Ghaiba, crossed the Yamuna to occupy that country, then ruled by Zabita Khan, son and successor of Najib ud-Daulah. Zabita Khan in desperation offered Baghel Singh large sums of money and proposed an alliance jointly to plunder the crown lands.The combined forces of Sikhs and Ruhilas overun the villages around the present site of New Delhi. In March 1776, they defeated the imperial forces near Muzaffarnagar. The whole of the Yamuna Gangetic Doab was now at their mercy.