Quran An-Nahl 16:124
إِنَّمَا جُعِلَ ٱلسَّبۡتُ عَلَى ٱلَّذِينَ ٱخۡتَلَفُواْ فِيهِۚ وَإِنَّ رَبَّكَ لَيَحۡكُمُ بَيۡنَهُمۡ يَوۡمَ ٱلۡقِيَٰمَةِ فِيمَا كَانُواْ فِيهِ يَخۡتَلِفُونَ ١٢٤
Translation
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.