Qur'an 41:33 · Fussilat

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

(33) And who is better in speech than one who invites to Allāh and does righteousness and says, "Indeed, I am of the Muslims."