Indeed, Allah is Knower of the unseen [aspects] of the heavens and earth. Indeed, He is Knowing of that within the breasts.
The Saheeh International Quran Translation
إِنَّ ٱللَّهَ عَٰلِمُ غَيْبِ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ إِنَّهُۥ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِIndeed, Allah is Knower of the unseen [aspects] of the heavens and earth. Indeed, He is Knowing of that within the breasts.