Complex sentence: Suhail was reinforced by Usman ibn Abi Al Aas from Persepolis, and Hakam ibn Amr from Busra, the combined forces defeated Raja Rasil at a pitch Battle of Rasil, who retreated to the eastern bank of River Indus.
Split into simpler sentences: Suhail was reinforced by Usman ibn Abi Al Aas from Persepolis, and Hakam ibn Amr from Busra. The combined forces defeated Raja Rasil at a pitch Battle of Rasil, who retreated to the eastern bank of River Indus.