سورة الحج

أَفَلَمْ يَسِيرُوا فِي الْأَرْضِ فَتَكُونَ لَهُمْ قُلُوبٌ يَعْقِلُونَ بِهَا أَوْ آذَانٌ يَسْمَعُونَ بِهَا ۖ فَإِنَّهَا لَا تَعْمَى الْأَبْصَارُ وَلَٰكِنْ تَعْمَى الْقُلُوبُ الَّتِي فِي الصُّدُورِ ﴿٤٦﴾

Surah al-Hajj

46. Have they not journeyed through the earth, and had hearts to reason with, or ears to listen with? It is not the eyes that go blind, but it is the hearts, within the chests, that go blind.