so you did not slay them but it was allah who slew them and you did not smite when you smote but it was allah who smote and that he might confer upon the believers a good gift from himself surely allah is hearing knowing.
فلم تقتلوهم ولكن الله قتلهم وما رميت إذ رميت ولكن الله رمى وليبلي المؤمنين منه بلاء حسنا إن الله سميع عليم