Surah Fatir 35:38

إِنَّ ٱللَّهَ عَـٰلِمُ غَيْبِ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ ۚ إِنَّهُۥ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ

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

Translation: Saheeh International

Tafsir

Truly God is Knower of the Unseen of the heavens and the earth; truly He knows well what is in the breasts what is in the hearts — thus there is all the more reason that He should also have knowledge of other things given the way people are.

Excerpt from Tafsir al-Jalalayn, commentary on 35:38, via Quran.com. The reader has the full commentary and 9 more tafsirs.