Qur'an 2:6

إِنَّ ٱلَّذِينَ كَفَرُوا۟ سَوَآءٌ عَلَيْهِمْ ءَأَنذَرْتَهُمْ أَمْ لَمْ تُنذِرْهُمْ لَا يُؤْمِنُونَ

“Indeed, those who disbelieve - it is all the same for them whether you warn them or do not warn them - they will not believe.”

Al-Baqara 2:6 · Saheeh International