• صَبّ
• صَبَّ
• صَبَبْنَا
• صُبُّوا۟
• يُصَبُّ

Appears 4 times in the Quran.

1. 22:19 هَٰذَانِ خَصْمَانِ ٱخْتَصَمُوا۟ فِى رَبِّهِمْ فَٱلَّذِينَ كَفَرُوا۟ قُطِّعَتْ لَهُمْ ثِيَابٌ مِّن نَّارٍ يُصَبُّ مِن فَوْقِ رُءُوسِهِمُ ٱلْحَمِيمُ

   These are two adversaries who dispute about their Lord; then (as to) those who disbelieve, for them are cut out garments of fire, boiling water shall be poured over their heads.
   

2. 44:48 ثُمَّ صُبُّوا۟ فَوْقَ رَأْسِهِۦ مِنْ عَذَابِ ٱلْحَمِيمِ

   Then pour above his head of the torment of the boiling water:
   

3. 80:25 أَنَّا صَبَبْنَا ٱلْمَآءَ صَبًّا

   That We pour down the water, pouring (it) down in abundance,
   

4. 89:13 فَصَبَّ عَلَيْهِمْ رَبُّكَ سَوْطَ عَذَابٍ

   Therefore your Lord let down upon them a portion of the chastisement.