Surah An-Nahl, Verse 124

إِنَّمَا جُعِلَ ٱلسَّبۡتُ عَلَى ٱلَّذِينَ ٱخۡتَلَفُواْ فِيهِۚ وَإِنَّ رَبَّكَ لَيَحۡكُمُ بَيۡنَهُمۡ يَوۡمَ ٱلۡقِيَٰمَةِ فِيمَا كَانُواْ فِيهِ يَخۡتَلِفُونَ١٢٤

innamā juʿila l-sabtu ʿalā alladhīna ikh'talafū fīhi wa-inna rabbaka layaḥkumu baynahum yawma l-qiyāmati fīmā kānū fīhi yakhtalifūna

The sabbath was only appointed for those who differed over it. And indeed, your Lord will judge between them on the Day of Resurrection concerning that over which they used to differ.