The sabbath was only appointed for those who differed over it. And (16:124)

Almuntakhab Fi Tafsir Alquran Alkarim

The Sabbath was imposed on those who were hard hearted and always disputed with their prophet and argued against its validity and its timing -the Jews- Saturday and the Christians -Sunday- and many among them defiantly and shamefully broke it. And they shall always contend with opposing arguments until Allah settles their dispute in Day of Judgement

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(16:124) As regards the Sabbath, We imposed this on those who differed about its observance. *121 Surely your Lord will decide between them on the Day of Resurrection about all those things in which they have been differing.

The sabbath was only appointed for those who differed over it. And meaning

*121) This is the answer to their second objection. Obviously, there was no need to state that the restrictions about the Sabbath applied only to the Jews and had nothing to do with the law of Prophet Abraham, because they themselves knew it. The restrictions were imposed upon the Jews because of their mischiefs and violations of the law. In order to understand fully the significance of this reference one is requested to read those passages of the Bible in which Commandments about the Sabbath have been stated, e.g., Exodus 20: 8-11, 23: 12-13,31: 1-17, 35: 23, and Numbers 15: 32-36. Besides this, one should also be acquainted with the impudent violations of the Sabbath. See Jeremiah: 17: 21-27 and Ezekiel. 10: 18-24.
 

The sabbath was only appointed for those who differed over it. And meaning in Urdu

رہا سبت، تو وہ ہم نے اُن لوگوں پر مسلط کیا تھا جنہوں نے اس کے احکام میں اختلاف کیا، اور یقیناً تیرا رب قیامت کے روز ان سب باتوں کا فیصلہ کر دے گا جن میں وہ اختلاف کرتے رہے ہیں