﴿ وَمَنْ أَحْسَنُ قَوْلًۭا مِّمَّن دَعَآ إِلَى ٱللَّهِ وَعَمِلَ صَٰلِحًۭا وَقَالَ إِنَّنِى مِنَ ٱلْمُسْلِمِينَ ﴾

“And who could be better of speech than he who calls [his fellow-men] unto God, and does what is just and right, and says, “Verily, I am of those who have surrendered themselves to God”?”

Please check ayah 41:36 for complete tafsir.