• ءَاسَىٰ
• أُسْوَة
• تَأْسَ
• تَأْسَوْا۟

Appears 7 times in the Quran.

1. 5:26 قَالَ فَإِنَّهَا مُحَرَّمَةٌ عَلَيْهِمْ أَرْبَعِينَ سَنَةً يَتِيهُونَ فِى ٱلْأَرْضِ فَلَا تَأْسَ عَلَى ٱلْقَوْمِ ٱلْفَٰسِقِينَ

   He said: So it shall surely be forbidden to them for forty years, they shall wander about in the land, therefore do not grieve for the nation of transgressors.
   

2. 5:68 قُلْ يَٰٓأَهْلَ ٱلْكِتَٰبِ لَسْتُمْ عَلَىٰ شَىْءٍ حَتَّىٰ تُقِيمُوا۟ ٱلتَّوْرَىٰةَ وَٱلْإِنجِيلَ وَمَآ أُنزِلَ إِلَيْكُم مِّن رَّبِّكُمْ وَلَيَزِيدَنَّ كَثِيرًا مِّنْهُم مَّآ أُنزِلَ إِلَيْكَ مِن رَّبِّكَ طُغْيَٰنًا وَكُفْرًا فَلَا تَأْسَ عَلَى ٱلْقَوْمِ ٱلْكَٰفِرِينَ

   Say: O followers of the Book! you follow no good till you keep up the Taurat and the Injeel and that which is revealed to you from your Lord; and surely that which has been revealed to you from your Lord shall make many of them increase in inordinacy and unbelief; grieve not therefore for the unbelieving people.
   

3. 7:93 فَتَوَلَّىٰ عَنْهُمْ وَقَالَ يَٰقَوْمِ لَقَدْ أَبْلَغْتُكُمْ رِسَٰلَٰتِ رَبِّى وَنَصَحْتُ لَكُمْ فَكَيْفَ ءَاسَىٰ عَلَىٰ قَوْمٍ كَٰفِرِينَ

   So he turned away from them and said: O my people! certainly I delivered to you the messages of my Lord and I gave you good advice; how shall I then be sorry for an unbelieving people?
   

4. 33:21 لَّقَدْ كَانَ لَكُمْ فِى رَسُولِ ٱللَّهِ أُسْوَةٌ حَسَنَةٌ لِّمَن كَانَ يَرْجُوا۟ ٱللَّهَ وَٱلْيَوْمَ ٱلْءَاخِرَ وَذَكَرَ ٱللَّهَ كَثِيرًا

   Certainly you have in the Messenger of Allah an excellent exemplar for him who hopes in Allah and the latter day and remembers Allah much.
   

5. 57:23 لِّكَيْلَا تَأْسَوْا۟ عَلَىٰ مَا فَاتَكُمْ وَلَا تَفْرَحُوا۟ بِمَآ ءَاتَىٰكُمْ وَٱللَّهُ لَا يُحِبُّ كُلَّ مُخْتَالٍ فَخُورٍ

   So that you may not grieve for what has escaped you, nor be exultant at what He has given you; and Allah does not love any arrogant boaster:
   

6. 60:4 قَدْ كَانَتْ لَكُمْ أُسْوَةٌ حَسَنَةٌ فِىٓ إِبْرَٰهِيمَ وَٱلَّذِينَ مَعَهُۥٓ إِذْ قَالُوا۟ لِقَوْمِهِمْ إِنَّا بُرَءَٰٓؤُا۟ مِنكُمْ وَمِمَّا تَعْبُدُونَ مِن دُونِ ٱللَّهِ كَفَرْنَا بِكُمْ وَبَدَا بَيْنَنَا وَبَيْنَكُمُ ٱلْعَدَٰوَةُ وَٱلْبَغْضَآءُ أَبَدًا حَتَّىٰ تُؤْمِنُوا۟ بِٱللَّهِ وَحْدَهُۥٓ إِلَّا قَوْلَ إِبْرَٰهِيمَ لِأَبِيهِ لَأَسْتَغْفِرَنَّ لَكَ وَمَآ أَمْلِكُ لَكَ مِنَ ٱللَّهِ مِن شَىْءٍ رَّبَّنَا عَلَيْكَ تَوَكَّلْنَا وَإِلَيْكَ أَنَبْنَا وَإِلَيْكَ ٱلْمَصِيرُ

   Indeed, there is for you a good example in Ibrahim and those with him when they said to their people: Surely we are clear of you and of what you serve besides Allah; we declare ourselves to be clear of you, and enmity and hatred have appeared between us and you forever until you believe in Allah alone-- but not in what Ibrahim said to his father: I would certainly ask forgiveness for you, and I do not control for you aught from Allah-- Our Lord! on Thee do we rely, and to Thee do we turn, and to Thee is the eventual coming:
   

7. 60:6 لَقَدْ كَانَ لَكُمْ فِيهِمْ أُسْوَةٌ حَسَنَةٌ لِّمَن كَانَ يَرْجُوا۟ ٱللَّهَ وَٱلْيَوْمَ ٱلْءَاخِرَ وَمَن يَتَوَلَّ فَإِنَّ ٱللَّهَ هُوَ ٱلْغَنِىُّ ٱلْحَمِيدُ

   Certainly there is for you in them a good example, for him who fears Allah and the last day; and whoever turns back, then surely Allah is the Self-sufficient, the Praised.