Ash-Shu'ara 26:4

In nasha/ nunazzil AAalayhim mina assama-iayatan fathallat aAAnaquhum lahakhadiAAeen

If We willed, We could send down to them from the sky a sign for which their necks would remain humbled.

If We so will, We can send down to them a sign from the sky, for which their necks will stay bent in submission.