• خَآصَّة
• خَصَاصَة
• يَخْتَصُّ

Appears 4 times in the Quran.

1. 2:105 مَّا يَوَدُّ ٱلَّذِينَ كَفَرُوا۟ مِنْ أَهْلِ ٱلْكِتَٰبِ وَلَا ٱلْمُشْرِكِينَ أَن يُنَزَّلَ عَلَيْكُم مِّنْ خَيْرٍ مِّن رَّبِّكُمْ وَٱللَّهُ يَخْتَصُّ بِرَحْمَتِهِۦ مَن يَشَآءُ وَٱللَّهُ ذُو ٱلْفَضْلِ ٱلْعَظِيمِ

   Those who disbelieve from among the followers of the Book do not like, nor do the polytheists, that the good should be sent down to you from your Lord, and Allah chooses especially whom He pleases for His mercy, and Allah is the Lord of mighty grace.
   

2. 3:74 يَخْتَصُّ بِرَحْمَتِهِۦ مَن يَشَآءُ وَٱللَّهُ ذُو ٱلْفَضْلِ ٱلْعَظِيمِ

   He specially chooses for His mercy whom He pleases; and Allah is the Lord of mighty grace.
   

3. 8:25 وَٱتَّقُوا۟ فِتْنَةً لَّا تُصِيبَنَّ ٱلَّذِينَ ظَلَمُوا۟ مِنكُمْ خَآصَّةً وَٱعْلَمُوٓا۟ أَنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ

   And fear an affliction which may not smite those of you in particular who are unjust; and know that Allah is severe in requiting (evil).
   

4. 59:9 وَٱلَّذِينَ تَبَوَّءُو ٱلدَّارَ وَٱلْإِيمَٰنَ مِن قَبْلِهِمْ يُحِبُّونَ مَنْ هَاجَرَ إِلَيْهِمْ وَلَا يَجِدُونَ فِى صُدُورِهِمْ حَاجَةً مِّمَّآ أُوتُوا۟ وَيُؤْثِرُونَ عَلَىٰٓ أَنفُسِهِمْ وَلَوْ كَانَ بِهِمْ خَصَاصَةٌ وَمَن يُوقَ شُحَّ نَفْسِهِۦ فَأُو۟لَٰٓئِكَ هُمُ ٱلْمُفْلِحُونَ

   And those who made their abode in the city and in the faith before them love those who have fled to them, and do not find in their hearts a need of what they are given, and prefer (them) before themselves though poverty may afflict them, and whoever is preserved from the niggardliness of his soul, these it is that are the successful ones.