Quran

 41:33

وَمَنْ أَحْسَنُ قَوْلًا مِمَّنْ دَعَا إِلَى اللَّهِ وَعَمِلَ صَالِحًا وَقَالَ إِنَّنِي مِنَ الْمُسْلِمِينَ ﴿٣٣﴾

33. And who is better in speech than someone who invites to Allah, acts with integrity, and says, “I am of those who submit”?