Futility of disbelievers' plots

وَمَكَرُوا۟ وَمَكَرَ ٱللَّهُ ۖ وَٱللَّهُ خَيْرُ ٱلْمَـٰكِرِينَ

And they [i.e., the disbelievers] planned, but Allāh planned. And Allāh is the best of planners.

فَلَمَّا جَآءَهُم بِٱلْحَقِّ مِنْ عِندِنَا قَالُوا۟ ٱقْتُلُوٓا۟ أَبْنَآءَ ٱلَّذِينَ ءَامَنُوا۟ مَعَهُۥ وَٱسْتَحْيُوا۟ نِسَآءَهُمْ ۚ وَمَا كَيْدُ ٱلْكَـٰفِرِينَ إِلَّا فِى ضَلَـٰلٍ

And when he brought them the truth from Us, they said, "Kill the sons of those who have believed with him and keep their women alive." But the plan of the disbelievers is not except in error.