Surah Fatir Verse 38

إِنَّ اللَّهَ عَالِمُ غَيْبِ السَّمَاوَاتِ وَالْأَرْضِ ۚ إِنَّهُ عَلِيمٌ بِذَاتِ الصُّدُورِ

Indeed, Allah is Knower of the unseen [aspects] of the heavens and earth. Indeed, He is Knowing of that within the breasts