Qur'an 3:90 · Aal-i-Imraan

إِنَّ ٱلَّذِينَ كَفَرُوا۟ بَعْدَ إِيمَٰنِهِمْ ثُمَّ ٱزْدَادُوا۟ كُفْرًۭا لَّن تُقْبَلَ تَوْبَتُهُمْ وَأُو۟لَٰٓئِكَ هُمُ ٱلضَّآلُّونَ

(90) Indeed, those who disbelieve [i.e., reject the message] after their belief and then increase in disbelief - never will their [claimed] repentance be accepted, and they are the ones astray.