Holy Quran » AL FAT-H : 22

And if those [Makkans] who disbelieve had fought you, they would have turned their backs [in flight]. Then they would not find a protector or a helper.

{ ولو قاتلكم الذين كفروا } بالحديبية { لولّوا الأدبار ثم لا يجدون وليا } يحرسهم { ولا نصيرا } .