• سُبَات
• سَّبْت
• سَّبْتهِمْ
• يَسْبِتُونَ

Appears 7 times in the Quran.

1. 2:65 وَلَقَدْ عَلِمْتُمُ ٱلَّذِينَ ٱعْتَدَوْا۟ مِنكُمْ فِى ٱلسَّبْتِ فَقُلْنَا لَهُمْ كُونُوا۟ قِرَدَةً خَٰسِـِٔينَ

   And certainly you have known those among you who exceeded the limits of the Sabbath, so We said to them: Be (as) apes, despised and hated.
   

2. 4:47 يَٰٓأَيُّهَا ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ ءَامِنُوا۟ بِمَا نَزَّلْنَا مُصَدِّقًا لِّمَا مَعَكُم مِّن قَبْلِ أَن نَّطْمِسَ وُجُوهًا فَنَرُدَّهَا عَلَىٰٓ أَدْبَارِهَآ أَوْ نَلْعَنَهُمْ كَمَا لَعَنَّآ أَصْحَٰبَ ٱلسَّبْتِ وَكَانَ أَمْرُ ٱللَّهِ مَفْعُولًا

   O you who have been given the Book! believe that which We have revealed, verifying what you have, before We alter faces then turn them on their backs, or curse them as We cursed the violaters of the Sabbath, and the command of Allah shall be executed.
   

3. 4:154 وَرَفَعْنَا فَوْقَهُمُ ٱلطُّورَ بِمِيثَٰقِهِمْ وَقُلْنَا لَهُمُ ٱدْخُلُوا۟ ٱلْبَابَ سُجَّدًا وَقُلْنَا لَهُمْ لَا تَعْدُوا۟ فِى ٱلسَّبْتِ وَأَخَذْنَا مِنْهُم مِّيثَٰقًا غَلِيظًا

   And We lifted the mountain (Sainai) over them at (the li taking of the covenant) and We said to them: Enter the door making obeisance; and We said to them: Do not exceed the limits of the Sabbath, and We made with them a firm covenant.
   

4. 7:163 وَسْـَٔلْهُمْ عَنِ ٱلْقَرْيَةِ ٱلَّتِى كَانَتْ حَاضِرَةَ ٱلْبَحْرِ إِذْ يَعْدُونَ فِى ٱلسَّبْتِ إِذْ تَأْتِيهِمْ حِيتَانُهُمْ يَوْمَ سَبْتِهِمْ شُرَّعًا وَيَوْمَ لَا يَسْبِتُونَ لَا تَأْتِيهِمْ كَذَٰلِكَ نَبْلُوهُم بِمَا كَانُوا۟ يَفْسُقُونَ

   And ask them about the town which stood by the sea; when they exceeded the limits of the Sabbath, when their fish came to them on the day of their Sabbath, appearing on the surface of the water, and on the day on which they did not keep the Sabbath they did not come to them; thus did We try them because they transgressed.
   

5. 16:124 إِنَّمَا جُعِلَ ٱلسَّبْتُ عَلَى ٱلَّذِينَ ٱخْتَلَفُوا۟ فِيهِ وَإِنَّ رَبَّكَ لَيَحْكُمُ بَيْنَهُمْ يَوْمَ ٱلْقِيَٰمَةِ فِيمَا كَانُوا۟ فِيهِ يَخْتَلِفُونَ

   The Sabbath was ordained only for those who differed about it, and most surely your Lord will judge between them on the resurrection day concerning that about which they differed.
   

6. 25:47 وَهُوَ ٱلَّذِى جَعَلَ لَكُمُ ٱلَّيْلَ لِبَاسًا وَٱلنَّوْمَ سُبَاتًا وَجَعَلَ ٱلنَّهَارَ نُشُورًا

   And He it is Who made the night a covering for you, and the sleep a rest, and He made the day to rise up again.
   

7. 78:9 وَجَعَلْنَا نَوْمَكُمْ سُبَاتًا

   And We made your sleep to be rest (to you),