• تَزْهَقَ
• زَاهِق
• زَهَقَ
• زَهُوق

Appears 4 times in the Quran.

1. 9:55 فَلَا تُعْجِبْكَ أَمْوَٰلُهُمْ وَلَآ أَوْلَٰدُهُمْ إِنَّمَا يُرِيدُ ٱللَّهُ لِيُعَذِّبَهُم بِهَا فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا وَتَزْهَقَ أَنفُسُهُمْ وَهُمْ كَٰفِرُونَ

   Let not then their property and their children excite your admiration; Allah only wishes to chastise them with these in this world's life and (that) their souls may depart while they are unbelievers.
   

2. 9:85 وَلَا تُعْجِبْكَ أَمْوَٰلُهُمْ وَأَوْلَٰدُهُمْ إِنَّمَا يُرِيدُ ٱللَّهُ أَن يُعَذِّبَهُم بِهَا فِى ٱلدُّنْيَا وَتَزْهَقَ أَنفُسُهُمْ وَهُمْ كَٰفِرُونَ

   And let not their property and their children excite your admlration; Allah only wishes to chastise them with these in this world and (that) their souls may depart while they are unbelievers
   

3. 17:81 وَقُلْ جَآءَ ٱلْحَقُّ وَزَهَقَ ٱلْبَٰطِلُ إِنَّ ٱلْبَٰطِلَ كَانَ زَهُوقًا

   And say: The truth has come and the falsehood has vanished; surely falsehood is a vanishing (thing).
   

4. 21:18 بَلْ نَقْذِفُ بِٱلْحَقِّ عَلَى ٱلْبَٰطِلِ فَيَدْمَغُهُۥ فَإِذَا هُوَ زَاهِقٌ وَلَكُمُ ٱلْوَيْلُ مِمَّا تَصِفُونَ

   Nay! We cast the truth against the falsehood, so that it breaks its head, and lo! it vanishes; and woe to you for what you describe;