Fussilat, 33 Ayah
41:33
وَمَنۡ أَحۡسَنُ قَوۡلٗا مِّمَّن دَعَآ إِلَى ٱللَّهِ وَعَمِلَ صَٰلِحٗا وَقَالَ إِنَّنِي مِنَ ٱلۡمُسۡلِمِينَ ٣٣
Wa Man 'Aĥsanu Qawlāan Mimman Da`ā 'Ilá Al-Lahi Wa `Amila Şāliĥāan Wa Qāla 'Innanī Mina Al-Muslimīna
And who is better in speech than one who invites to Allah and does righteousness and says, "Indeed, I am of the Muslims."