Quran 47:30 from Surah Muhammad on Divine Marvels.
وَلَوۡ نَشَآءُ لَأَرَيۡنَٰكَهُمۡ فَلَعَرَفۡتَهُم بِسِيمَٰهُمۡۚ وَلَتَعۡرِفَنَّهُمۡ فِي لَحۡنِ ٱلۡقَوۡلِۚ وَٱللَّهُ يَعۡلَمُ أَعۡمَٰلَكُمۡ
English translation: And if We willed surely We could show them to you and you would know them by their marks but surely you will know them by (the) tone (of their) speech And Allah knows your deeds
Transliteration: walaw nashau la-araynakahum fala'araftahum bisimahum walata'rifannahum fi lahni al-qawli wal-lahu ya'lamu a'malakum