Surah Fussilat, Verse 33

وَمَنۡ أَحۡسَنُ قَوۡلٗا مِّمَّن دَعَآ إِلَى ٱللَّهِ وَعَمِلَ صَٰلِحٗا وَقَالَ إِنَّنِي مِنَ ٱلۡمُسۡلِمِينَ٣٣

waman aḥsanu qawlan mimman daʿā ilā l-lahi waʿamila ṣāliḥan waqāla innanī mina l-mus'limīna

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