During his reign the Mughal viceroy at Bengal Mir Jumla II invaded and occupied his capital Garhgaon as a result of which he had to retreat to the Namrup area, and because of this flight he is also known as the Bhagania Roja in the Buranjis.

He formally accepted the initiation of Niranjan Bapu and settled him as the as Satradhikar (head of Vaisnava religious institution) in the Auniati Satra.

Mir Jumla II, Aurangzeb's general who pursued Prince Shuja to the Arakan, was made the governor of Bengal.

Mir Jumla overran Jogighopa, Guwahati, Simlagarh, Salagarh and finally Sutamla's capital Garhgaon on March 17, which the Ahom king had abandoned for Namrup.

Early onset of monsoon that year made it difficult for Mir Jumla to transfer the voluminous booty that fell into his hands following his capture of Garhgaon.