Quran 41:33 from Surah Fussilat on Divine Marvels.
وَمَنۡ أَحۡسَنُ قَوۡلٗا مِّمَّن دَعَآ إِلَى ٱللَّهِ وَعَمِلَ صَٰلِحٗا وَقَالَ إِنَّنِي مِنَ ٱلۡمُسۡلِمِينَ
English translation: And who (is) better (in) speech than (one) who invites to Allah and does righteous (deeds) and says Indeed I am of those who submit
Transliteration: waman ahsanu qawlan mimman da'a ila al-lahi wa'amila salihan waqala innani mina al-mus'limina