• كُبَّتْ
• مُكِبّ

Appears 2 times in the Quran.

1. 27:90 وَمَن جَآءَ بِٱلسَّيِّئَةِ فَكُبَّتْ وُجُوهُهُمْ فِى ٱلنَّارِ هَلْ تُجْزَوْنَ إِلَّا مَا كُنتُمْ تَعْمَلُونَ

   And whoever brings evil, these shall be thrown down on their faces into the fire; shall you be rewarded (for) aught except what you did?
   

2. 67:22 أَفَمَن يَمْشِى مُكِبًّا عَلَىٰ وَجْهِهِۦٓ أَهْدَىٰٓ أَمَّن يَمْشِى سَوِيًّا عَلَىٰ صِرَٰطٍ مُّسْتَقِيمٍ

   What! is he who goes prone upon his face better guided or he who walks upright upon a straight path?