إِنَّمَا جُعِلَ ٱلسَّبۡتُ عَلَى ٱلَّذِينَ ٱخۡتَلَفُواْ فِيهِ ۚ وَإِنَّ رَبَّكَ لَيَحۡكُمُ بَيۡنَهُمۡ يَوۡمَ ٱلۡقِيَٰمَةِ فِيمَا كَانُواْ فِيهِ يَخۡتَلِفُونَ
The Sabbath was only made (strict) for those who disagreed (as to its observance); But Allah will judge between them on the Day of Judgment, as to their differences.<br/>
The Sabbath was only prescribed, in other words, its consecration was made obligatory [only], for those who differed concerning it, with their prophet - these were the Jews. They were commanded to devote themselves solely to worship on Friday, but they said, 'We do not want it', and chose Saturday; consequently thereon [the observance of] it was enforced strictly on them; and lo! your Lord will judge between them on the Day of Resurrection, concerning that wherein they used to differ, with regard this matter [of the Sabbath], by rewarding the obedient and chastising the one who disobeyed by [his] violating its sanctity.