you killed them not but allah killed them. and you threw not when you did throw but allah threw that he might test the believers by a fair trial from him. verily allah is allhearer allknower.
فلم تقتلوهم ولكن الله قتلهم وما رميت إذ رميت ولكن الله رمى وليبلي المؤمنين منه بلاء حسنا إن الله سميع عليم