Surah Muhammad, ayah 30

47:30

وَلَوۡ نَشَآءُ لَأَرَيۡنَٰكَهُمۡ فَلَعَرَفۡتَهُم بِسِيمَٰهُمۡۚ وَلَتَعۡرِفَنَّهُمۡ فِي لَحۡنِ ٱلۡقَوۡلِۚ وَٱللَّهُ يَعۡلَمُ أَعۡمَٰلَكُمۡ ٣٠

Walaw nashā'u la araynākahum fala'araftahum bisīmāhum walata'rifannahum fī lahnil-qawli wallāhu ya'lamu a'mālakum

And if We willed, We could show them to you, and you would know them by their mark; but you will surely know them by the tone of [their] speech. And Allāh knows your deeds.