It is not ye who slew them; it was Allah: when thou threwest (a handful of dust), it was not thy act, but Allah´s: in order that He might test the Believers by a gracious trial from Himself: for Allah is He Who heareth and knoweth (all things).
And you did not kill them, but it was Allah who killed them. And you threw not, [O Muhammad], when you threw, but it was Allah who threw that He might test the believers with a good test. Indeed, Allah is Hearing and Knowing.