Qazi Abdul Sattar is the author of the book Khalid Bin Waleed Urdu Pdf. It is an excellent history story that describes the life of Hazrat Khalid Bin Waleed R.A. He was the companion of the Holy Prophet S.A.W. and a great military commander in the history of Islam. Khalid Bin Waleed paid a vital role in the conquests of the Roman Empire.