إِنَّما جُعِلَ السَّبتُ عَلَى الَّذينَ اختَلَفوا فيهِ ۚ وَإِنَّ رَبَّكَ لَيَحكُمُ بَينَهُم يَومَ القِيامَةِ فيما كانوا فيهِ يَختَلِفونَ

The Sabbath was only instituted for those in dispute over it. Your Lord will resolve their disputes on Resurrection Day.