Al Mulk, 13 Ayah
67:13
وَأَسِرُّواْ قَوۡلَكُمۡ أَوِ ٱجۡهَرُواْ بِهِۦٓۖ إِنَّهُۥ عَلِيمُۢ بِذَاتِ ٱلصُّدُورِ ١٣
Wa 'Asirrū Qawlakum 'Aw Ajharū Bihi ۖ 'Innahu `Alīmun Bidhāti Aş-Şudūri
And conceal your speech or publicize it; indeed, He is Knowing of that within the breasts.