Surat Aal-i-Imraan (The Family of Imraan) - آل عمران

إِلَّا ٱلَّذِينَ تَابُوا۟ مِنۢ بَعْدِ ذَٰلِكَ وَأَصْلَحُوا۟ فَإِنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌ ﴿٨٩﴾ إِنَّ ٱلَّذِينَ كَفَرُوا۟ بَعْدَ إِيمَٰنِهِمْ ثُمَّ ٱزْدَادُوا۟ كُفْرًا لَّن تُقْبَلَ تَوْبَتُهُمْ وَأُو۟لَٰٓئِكَ هُمُ ٱلضَّآلُّونَ﴿٩٠﴾

Except those who repent after that and amend, then surely Allah is Forgiving, Merciful. Surely, those who disbelieve after their believing, then increase in unbelief, their repentance shall not be accepted, and these are they that go astray.