﴿ إِنَّ ٱللَّهَ عَٰلِمُ غَيْبِ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۚ إِنَّهُۥ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ ﴾

“Verily, God knows the hidden reality of the heavens and the earth: [and,] behold, He has full knowledge of what is in the hearts [of men].”

Please check ayah 35:39 for complete tafsir.