• شَفَا

Appears 2 times in the Quran.

1. 3:103 وَٱعْتَصِمُوا۟ بِحَبْلِ ٱللَّهِ جَمِيعًا وَلَا تَفَرَّقُوا۟ وَٱذْكُرُوا۟ نِعْمَتَ ٱللَّهِ عَلَيْكُمْ إِذْ كُنتُمْ أَعْدَآءً فَأَلَّفَ بَيْنَ قُلُوبِكُمْ فَأَصْبَحْتُم بِنِعْمَتِهِۦٓ إِخْوَٰنًا وَكُنتُمْ عَلَىٰ شَفَا حُفْرَةٍ مِّنَ ٱلنَّارِ فَأَنقَذَكُم مِّنْهَا كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَكُمْ ءَايَٰتِهِۦ لَعَلَّكُمْ تَهْتَدُونَ

   And hold fast by the covenant of Allah all together and be not disunited, and remember the favor of Allah on you when you were enemies, then He united your hearts so by His favor you became brethren; and you were on the brink of a pit of fire, then He saved you from it, thus does Allah make clear to you His communications that you may follow the right way.
   

2. 9:109 أَفَمَنْ أَسَّسَ بُنْيَٰنَهُۥ عَلَىٰ تَقْوَىٰ مِنَ ٱللَّهِ وَرِضْوَٰنٍ خَيْرٌ أَم مَّنْ أَسَّسَ بُنْيَٰنَهُۥ عَلَىٰ شَفَا جُرُفٍ هَارٍ فَٱنْهَارَ بِهِۦ فِى نَارِ جَهَنَّمَ وَٱللَّهُ لَا يَهْدِى ٱلْقَوْمَ ٱلظَّٰلِمِينَ

   Is he, therefore, better who lays his foundation on fear of Allah and (His) good pleasure, or he who lays his foundation on the edge of a cracking hollowed bank, so it broke down with him into the fire of hell; and Allah does not guide the unjust people.