Najib ad-Dawlah, who belonged to the Yusufzai tribe, was a prominent Rohilla chief. In the 1740s, he founded the city of Najibabad in Rohilkhand. In 1757, he supported Ahmad Shah Durrani in his attack on Delhi. After his victory, Ahmad Shah Durrani re-installed the Mughal emperor Alamgir II on the Delhi throne as the titular Mughal head, but gave the actual control of Delhi to Najib ad-Daula. From 1757 to 1770, Najib ad-Daula served as the governor of Saharanpur, also ruling over Dehradun. In 1761, he took part in the Third Battle of Panipat and provided thousands of Rohilla troops and many guns to Ahmad Shah Durrani to defeat the Marathas. He also convinced Shuja-ud-Daula, the Nawab of Awadh, to join the Durrani forces. Before his departure from Delhi, Ahmad Shah Durrani appointed Najib ad-Dawlah as "mir bakshi" (paymaster-general) of the Mughal emperor Shah Alam II. After his death in 1770, Najib ad-Dawlah was succeeded by his son, Zabita Khan, who was defeated in 1772 by the Marathas, forcing him to flee from Rohilkhand. However, the descendants of Najib ad-Dawlah continued to rule Najibabad area until they were defeated by the British at Nagina on 21 April 1858 during the Indian Rebellion of 1857.