Ya-Sin · Ayah 10
وَسَوَآءٌ عَلَيْهِمْ ءَأَنذَرْتَهُمْ أَمْ لَمْ تُنذِرْهُمْ لَا يُؤْمِنُونَ
And it is all the same for them whether you warn them or do not warn them - they will not believe.
Quran 36:10 (Ya-Sin) · Saheeh International, Noor International Center (QuranEnc v1.1.2)