What number of buildings are still in mecca that were also there in the time of Muhammad ?
According to Quranic description , war is an abnormal and unenviable way which , when inevitable , should be limited to minimal casualty , and free from any kind of transgression on the part of the believers:Thus , to ensure the security of the Ansars and Muhajirun of Medina , Muhammad resorted to the following measures : Visiting the neighboring tribes to enter into non-aggression treaty with them to secure Medina from their attacks .