Surah Al-Hajj (The Pilgrimage), Verse 46

اَفَلَمْ یَسِیْرُوْا فِی الْاَرْضِ فَتَكُوْنَ لَهُمْ قُلُوْبٌ یَّعْقِلُوْنَ بِهَاۤ اَوْ اٰذَانٌ یَّسْمَعُوْنَ بِهَا فَاِنَّهَا لَا تَعْمَی الْاَبْصَارُ وَلٰكِنْ تَعْمَی الْقُلُوْبُ الَّتِیْ فِی الصُّدُوْرِ ۟

Afalam yaseeroo fil ardi fatakoona lahum quloobuny ya'qiloona bihaaa aw aazaanuny yasma'oona bihaa fa innahaa laa ta'mal absaaru wa laakin ta'mal quloobul latee fissudoor

“Do they not travel through the land, so that their hearts (and minds) may thus learn wisdom and their ears may thus learn to hear? Truly it is not their eyes that are blind, but their hearts which are in their breasts.”

Quran 22:46 (Yusuf Ali Translation)