Sura 30 Ar-Rum (The Romans), aya 59

1. كَذَٰلِكَ يَطْبَعُ اللَّهُ عَلَىٰ قُلُوبِ الَّذِينَ لَا يَعْلَمُونَ

   Thus does Allah seal the hearts of those who do not know.

   30:59

Tafsiri: Saheeh International