فَلَوِ اجْتَمَعَ الْخَلْقُ كُلُّهُمْ عَلَى شَيْءٍ كَتَبَهُ اللَّهُ تَعَالَى فِيهِ أَنَّهُ كَائِنٌ لِيَجْعَلُوهُ غَيْرَ كَائِنٍ لَمْ يَقْدِرُوا عَلَيْهِ
If all creatures gathered to prevent something written to occur, they would be unable to do so.
Whatever is known and decisively decreed by Allah will take place as decreed. Even the combined effort of creation cannot prove Allah’s knowledge or final judgment false. The discussion concerns the unalterable divine decree.