• تَثْقَفَنَّهُمْ
• ثَقِفْتُمُوهُمْ
• ثُقِفُوٓا۟
• يَثْقَفُوكُمْ

Appears 6 times in the Quran.

1. 2:191 وَٱقْتُلُوهُمْ حَيْثُ ثَقِفْتُمُوهُمْ وَأَخْرِجُوهُم مِّنْ حَيْثُ أَخْرَجُوكُمْ وَٱلْفِتْنَةُ أَشَدُّ مِنَ ٱلْقَتْلِ وَلَا تُقَٰتِلُوهُمْ عِندَ ٱلْمَسْجِدِ ٱلْحَرَامِ حَتَّىٰ يُقَٰتِلُوكُمْ فِيهِ فَإِن قَٰتَلُوكُمْ فَٱقْتُلُوهُمْ كَذَٰلِكَ جَزَآءُ ٱلْكَٰفِرِينَ

   And kill them wherever you find them, and drive them out from whence they drove you out, and persecution is severer than slaughter, and do not fight with them at the Sacred Mosque until they fight with you in it, but if they do fight you, then slay them; such is the recompense of the unbelievers.
   

2. 3:112 ضُرِبَتْ عَلَيْهِمُ ٱلذِّلَّةُ أَيْنَ مَا ثُقِفُوٓا۟ إِلَّا بِحَبْلٍ مِّنَ ٱللَّهِ وَحَبْلٍ مِّنَ ٱلنَّاسِ وَبَآءُو بِغَضَبٍ مِّنَ ٱللَّهِ وَضُرِبَتْ عَلَيْهِمُ ٱلْمَسْكَنَةُ ذَٰلِكَ بِأَنَّهُمْ كَانُوا۟ يَكْفُرُونَ بِـَٔايَٰتِ ٱللَّهِ وَيَقْتُلُونَ ٱلْأَنۢبِيَآءَ بِغَيْرِ حَقٍّ ذَٰلِكَ بِمَا عَصَوا۟ وَّكَانُوا۟ يَعْتَدُونَ

   Abasement is made to cleave to them wherever they are found, except under a covenant with Allah and a covenant with men, and they have become deserving of wrath from Allah, and humiliation is made to cleave to them; this is because they disbelieved in the communications of Allah and slew the prophets unjustly; this is because they disobeyed and exceeded the limits.
   

3. 4:91 سَتَجِدُونَ ءَاخَرِينَ يُرِيدُونَ أَن يَأْمَنُوكُمْ وَيَأْمَنُوا۟ قَوْمَهُمْ كُلَّ مَا رُدُّوٓا۟ إِلَى ٱلْفِتْنَةِ أُرْكِسُوا۟ فِيهَا فَإِن لَّمْ يَعْتَزِلُوكُمْ وَيُلْقُوٓا۟ إِلَيْكُمُ ٱلسَّلَمَ وَيَكُفُّوٓا۟ أَيْدِيَهُمْ فَخُذُوهُمْ وَٱقْتُلُوهُمْ حَيْثُ ثَقِفْتُمُوهُمْ وَأُو۟لَٰٓئِكُمْ جَعَلْنَا لَكُمْ عَلَيْهِمْ سُلْطَٰنًا مُّبِينًا

   You will find others who desire that they should be safe from you and secure from their own people; as often as they are sent back to the mischief they get thrown into it headlong; therefore if they do not withdraw from you, and (do not) offer you peace and restrain their hands, then seize them and kill them wherever you find them; and against these We have given you a clear authority.
   

4. 8:57 فَإِمَّا تَثْقَفَنَّهُمْ فِى ٱلْحَرْبِ فَشَرِّدْ بِهِم مَّنْ خَلْفَهُمْ لَعَلَّهُمْ يَذَّكَّرُونَ

   Therefore if you overtake them in fighting, then scatter by (making an example of) them those who are in their rear, that they may be mindful.
   

5. 33:61 مَّلْعُونِينَ أَيْنَمَا ثُقِفُوٓا۟ أُخِذُوا۟ وَقُتِّلُوا۟ تَقْتِيلًا

   Cursed: wherever they are found they shall be seized and murdered, a (horrible) murdering.
   

6. 60:2 إِن يَثْقَفُوكُمْ يَكُونُوا۟ لَكُمْ أَعْدَآءً وَيَبْسُطُوٓا۟ إِلَيْكُمْ أَيْدِيَهُمْ وَأَلْسِنَتَهُم بِٱلسُّوٓءِ وَوَدُّوا۟ لَوْ تَكْفُرُونَ

   If they find you, they will be your enemies, and will stretch forth towards you their hands and their tongues with evil, and they ardently desire that you may disbelieve.