وَمَنْ أَحْسَنُ قَوْلًا مِّمَّن دَعَا إِلَى اللَّهِ وَعَمِلَ صَالِحًا وَقَالَ إِنَّنِي مِنَ الْمُسْلِمِينَ
[41:33]
And who speaks better than he who calls to Allah while he himself does good, and says: I am surely of those who submit?
Who is better in speech than one who calls (men) to Allah, works righteousness, and says, "I am of those who bow in Islam"?
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).