An understanding was reached between Ranjit Singh and Fateh Khan of Kabul in 1813 A.D. It was decided that Ranjit Singh would send 12 thousand soldiers to help Fateh Khan for the conquest of Kashmir and Fateh Khan, in return, would give him one- third of the conquered territories in addition to the booty of war. Besides, Ranjit Singh promised to help Fateh Khan in his conquest of Attock, whereas Fateh Khan would help Ranjit Singh in the conquest of Multan.

The combined forces of Ranjit Singh and Fateh Khan conquered Kashmir with great ease but Fateh Khan did not fulfil his promise. He did not pay him anything out of the money looted by him by the conquest of Kashmir. Ranjit Singh attacked Attock in a fury (according to the treaty, Fateh Khan was to occupy Attock). His commander-in-chief Azizuddin took Attock from Jahandad Khan and gave him one lakh rupees and a big jagir. Fateh Khan could not tolerate this. He attacked Attock with a big army immediately. A furious battle was fought between the Sikhs and the Afghans at Hazro near Attock. The Sikhs came out victorious in this battle.