يٰسۤ — Yasin Ayat 10

وَسَوَاۤءٌ عَلَيْهِمْ ءَاَنْذَرْتَهُمْ اَمْ لَمْ تُنْذِرْهُمْ لَا يُؤْمِنُوْنَ

Wa sawā'un ‘alaihim a'anżartahum am lam tunżirhum lā yu'minūn(a).

"And it is all the same for them whether you warn them or do not warn them - they will not believe."