Quran 8:55 from Surah Al-Anfaal on Divine Marvels.
إِنَّ شَرَّ ٱلدَّوَآبِّ عِندَ ٱللَّهِ ٱلَّذِينَ كَفَرُواْ فَهُمۡ لَا يُؤۡمِنُونَ
English translation: Indeed (the) worst (of) the living creatures near Allah (are) those who disbelieve and they (will) not believe
Transliteration: inna sharra al-dawabi inda al-lahi alladhina kafaru fahum la yu'minuna