Dalil
العربية

Quran Al-Anbya 21:110

إِنَّهُۥ يَعۡلَمُ ٱلۡجَهۡرَ مِنَ ٱلۡقَوۡلِ وَيَعۡلَمُ مَا تَكۡتُمُونَ

Translation

Indeed, He knows what is declared of speech, and He knows what you conceal.