Qur'an 8:55

إِنَّ شَرَّ ٱلدَّوَآبِّ عِندَ ٱللَّهِ ٱلَّذِينَ كَفَرُوا۟ فَهُمْ لَا يُؤْمِنُونَ

“Indeed, the worst of living creatures in the sight of Allāh are those who have disbelieved, and they will not [ever] believe-”

Al-Anfaal 8:55 · Saheeh International