The Quran root ش ف ق sh-f-q

وَوُضِعَ الْكِتَابُ فَتَرَى الْمُجْرِمِينَ مُشْفِقِينَ مِمَّا فِيهِ وَيَقُولُونَ يَا وَيْلَتَنَا مَالِ هَٰذَا الْكِتَابِ لَا يُغَادِرُ صَغِيرَةً وَلَا كَبِيرَةً إِلَّا أَحْصَاهَا وَوَجَدُوا مَا عَمِلُوا حَاضِرًا وَلَا يَظْلِمُ رَبُّكَ أَحَدًا ٤٩

مُشْفِقِينَ mush'fiqīna · fearful

And the record [of deeds] will be placed [open], and you will see the criminals fearful of that within it, and they will say, "Oh, woe to us! What is this book that leaves nothing small or great except that it has enumerated it?" And they will find what they did present [before them]. And your Lord does injustice to no one. (Surah Al-Kahf, 18:49)

يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ وَلَا يَشْفَعُونَ إِلَّا لِمَنِ ارْتَضَىٰ وَهُم مِّنْ خَشْيَتِهِ مُشْفِقُونَ ٢٨

مُشْفِقُونَ mush'fiqūna · stand in awe

He knows what is [presently] before them and what will be after them, and they cannot intercede except on behalf of one whom He approves. And they, from fear of Him, are apprehensive. (Surah Al-Anbya, 21:28)

إِنَّا عَرَضْنَا الْأَمَانَةَ عَلَى السَّمَاوَاتِ وَالْأَرْضِ وَالْجِبَالِ فَأَبَيْنَ أَن يَحْمِلْنَهَا وَأَشْفَقْنَ مِنْهَا وَحَمَلَهَا الْإِنسَانُ إِنَّهُ كَانَ ظَلُومًا جَهُولًا ٧٢

وَأَشْفَقْنَ wa-ashfaqna · and they feared

Indeed, We offered the Trust to the heavens and the earth and the mountains, and they declined to bear it and feared it; but man [undertook to] bear it. Indeed, he was unjust and ignorant. (Surah Al-Ahzab, 33:72)

فَلَا أُقْسِمُ بِالشَّفَقِ ١٦

بِالشَّفَقِ bil-shafaqi · by the twilight glow

So I swear by the twilight glow (Surah Al-Inshiqaq, 84:16)