Complex sentence: In his poetic style, Khusrau states that by this time, all the insolent Hindus in the realm of Hind had died on the battlefield, and the other Hindus had bowed their heads before Alauddin.
Split into simpler sentences: In his poetic style, Khusrau states that by this time, all the insolent Hindus in the realm of Hind had died on the battlefield. The other Hindus had bowed their heads before Alauddin.