كَيْفَ يَهْدِى ٱللَّهُ قَوْمًا كَفَرُوا۟ بَعْدَ إِيمَـٰنِهِمْ وَشَهِدُوٓا۟ أَنَّ ٱلرَّسُولَ حَقٌّ وَجَآءَهُمُ ٱلْبَيِّنَـٰتُ ۚ وَٱللَّهُ لَا يَهْدِى ٱلْقَوْمَ ٱلظَّـٰلِمِينَ

How shall Allāh guide a people who disbelieved after their belief and had witnessed that the Messenger is true and clear signs had come to them? And Allāh does not guide the wrongdoing people.

Ali 'Imran 86

يَـٰٓأَيُّهَا ٱلنَّاسُ قَدْ جَآءَكُم بُرْهَـٰنٌ مِّن رَّبِّكُمْ وَأَنزَلْنَآ إِلَيْكُمْ نُورًا مُّبِينًا

O mankind, there has come to you a conclusive proof from your Lord, and We have sent down to you a clear light.1

An-Nisa 174

قُلْ فَلِلَّهِ ٱلْحُجَّةُ ٱلْبَـٰلِغَةُ ۖ فَلَوْ شَآءَ لَهَدَىٰكُمْ أَجْمَعِينَ

Say, "With Allāh is the far-reaching [i.e., conclusive] argument. If He had willed, He would have guided you all."

Al-An'am 149

ثُمَّ بَعَثْنَا مِنۢ بَعْدِهِۦ رُسُلًا إِلَىٰ قَوْمِهِمْ فَجَآءُوهُم بِٱلْبَيِّنَـٰتِ فَمَا كَانُوا۟ لِيُؤْمِنُوا۟ بِمَا كَذَّبُوا۟ بِهِۦ مِن قَبْلُ ۚ كَذَٰلِكَ نَطْبَعُ عَلَىٰ قُلُوبِ ٱلْمُعْتَدِينَ

Then We sent after him messengers to their peoples, and they came to them with clear proofs. But they were not to believe in that which they had denied before.1 Thus We seal over the hearts of the transgressors.

Yunus 74

لَقَدْ كَانَ فِى قَصَصِهِمْ عِبْرَةٌ لِّأُو۟لِى ٱلْأَلْبَـٰبِ ۗ مَا كَانَ حَدِيثًا يُفْتَرَىٰ وَلَـٰكِن تَصْدِيقَ ٱلَّذِى بَيْنَ يَدَيْهِ وَتَفْصِيلَ كُلِّ شَىْءٍ وَهُدًى وَرَحْمَةً لِّقَوْمٍ يُؤْمِنُونَ

There was certainly in their stories a lesson for those of understanding. Never was it [i.e., the Qur’ān] a narration invented, but a confirmation of what was before it and a detailed explanation of all things and guidance and mercy for a people who believe.

Yusuf 111