Quran 24:51 from Surah An-Noor on Divine Marvels.
إِنَّمَا كَانَ قَوۡلَ ٱلۡمُؤۡمِنِينَ إِذَا دُعُوٓاْ إِلَى ٱللَّهِ وَرَسُولِهِۦ لِيَحۡكُمَ بَيۡنَهُمۡ أَن يَقُولُواْ سَمِعۡنَا وَأَطَعۡنَاۚ وَأُوْلَٰٓئِكَ هُمُ ٱلۡمُفۡلِحُونَ
English translation: Only is (the) statement (of) the believers when they are called to Allah and His Messenger to judge between them (is) that they say We hear and we obey And those [they] (are) the successful
Transliteration: innama kana qawla al-mu'minina idha du'u ila al-lahi warasulihi liyahkuma baynahum an yaqulu sami'na wa-ata'na wa-ulaika humu al-muf'lihuna