Quran 41:33 Fussilat, ayah 33 of 54

وَمَنْ أَحْسَنُ قَوْلًا مِّمَّن دَعَآ إِلَى ٱللَّهِ وَعَمِلَ صَـٰلِحًا وَقَالَ إِنَّنِى مِنَ ٱلْمُسْلِمِينَ ۝٣٣

41:33 And who is better in speech than him who prayeth unto his Lord and doeth right, and saith: Lo! I am of those who are muslims (surrender unto Him).