Surah An-Nisa, Verse 65

فَلَا وَرَبِّكَ لَا يُؤۡمِنُونَ حَتَّىٰ يُحَكِّمُوكَ فِيمَا شَجَرَ بَيۡنَهُمۡ ثُمَّ لَا يَجِدُواْ فِيٓ أَنفُسِهِمۡ حَرَجٗا مِّمَّا قَضَيۡتَ وَيُسَلِّمُواْ تَسۡلِيمٗا٦٥

falā warabbika lā yu'minūna ḥattā yuḥakkimūka fīmā shajara baynahum thumma lā yajidū fī anfusihim ḥarajan mimmā qaḍayta wayusallimū taslīman

But no, by your Lord, they will not [truly] believe until they make you, [O Muḥammad], judge concerning that over which they dispute among themselves and then find within themselves no discomfort from what you have judged and submit in [full, willing] submission.