Surah An-Nur (The Light), Verse 51

اِنَّمَا كَانَ قَوْلَ الْمُؤْمِنِیْنَ اِذَا دُعُوْۤا اِلَی اللّٰهِ وَرَسُوْلِهٖ لِیَحْكُمَ بَیْنَهُمْ اَنْ یَّقُوْلُوْا سَمِعْنَا وَاَطَعْنَا وَاُولٰٓىِٕكَ هُمُ الْمُفْلِحُوْنَ ۟

Innamaa kaana qawlal mu'mineena izaa du'ooo ilal laahi wa Rasoolihee li yahkuma bainahum ai yaqooloo sami'naa wa ata'naa; wa ulaaa'ika humul muflihoon

“The answer of the Believers, when summoned to Allah and His Messenger, in order that He may judge between them, is no other than this: they say, "We hear and we obey": it is such as these that will attain felicity.”

Quran 24:51 (Yusuf Ali Translation)