Quran 19:50

وَوَهَبْنَا لَهُمْ مِنْ رَحْمَتِنَا وَجَعَلْنَا لَهُمْ لِسَانَ صِدْقٍ عَلِيًّا

And We bestowed of Our Mercy on them, and We granted them lofty honour on the tongue of truth.