The Quran root خ و ف kh-w-f

فَمَنْ خَافَ مِن مُّوصٍ جَنَفًا أَوْ إِثْمًا فَأَصْلَحَ بَيْنَهُمْ فَلَا إِثْمَ عَلَيْهِ إِنَّ اللَّهَ غَفُورٌ رَّحِيمٌ ١٨٢

خَافَ khāfa · fears

But if one fears from the bequeather [some] error or sin and corrects that which is between them [i.e., the concerned parties], there is no sin upon him. Indeed, Allāh is Forgiving and Merciful. (Surah Al-Baqarah, 2:182)

الطَّلَاقُ مَرَّتَانِ فَإِمْسَاكٌ بِمَعْرُوفٍ أَوْ تَسْرِيحٌ بِإِحْسَانٍ وَلَا يَحِلُّ لَكُمْ أَن تَأْخُذُوا مِمَّا آتَيْتُمُوهُنَّ شَيْئًا إِلَّا أَن يَخَافَا أَلَّا يُقِيمَا حُدُودَ اللَّهِ فَإِنْ خِفْتُمْ أَلَّا يُقِيمَا حُدُودَ اللَّهِ فَلَا جُنَاحَ عَلَيْهِمَا فِيمَا افْتَدَتْ بِهِ تِلْكَ حُدُودُ اللَّهِ فَلَا تَعْتَدُوهَا وَمَن يَتَعَدَّ حُدُودَ اللَّهِ فَأُولَٰئِكَ هُمُ الظَّالِمُونَ ٢٢٩

يَخَافَا yakhāfā · both fear

Divorce is twice. Then [after that], either keep [her] in an acceptable manner or release [her] with good treatment. And it is not lawful for you to take anything of what you have given them unless both fear that they will not be able to keep [within] the limits of Allāh. But if you fear that they will not keep [within] the limits of Allāh, then there is no blame upon either of them concerning that by which she ransoms herself. These are the limits of Allāh, so do not transgress them. And whoever transgresses the limits of Allāh - it is those who are the wrongdoers [i.e., the unjust]. (Surah Al-Baqarah, 2:229)

قُلْنَا اهْبِطُوا مِنْهَا جَمِيعًا فَإِمَّا يَأْتِيَنَّكُم مِّنِّي هُدًى فَمَن تَبِعَ هُدَايَ فَلَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُونَ ٣٨

خَوْفٌ khawfun · fear

We said, "Go down from it, all of you. And when guidance comes to you from Me, whoever follows My guidance - there will be no fear concerning them, nor will they grieve. (Surah Al-Baqarah, 2:38)

وَاذْكُر رَّبَّكَ فِي نَفْسِكَ تَضَرُّعًا وَخِيفَةً وَدُونَ الْجَهْرِ مِنَ الْقَوْلِ بِالْغُدُوِّ وَالْآصَالِ وَلَا تَكُن مِّنَ الْغَافِلِينَ ٢٠٥

وَخِيفَةً wakhīfatan · and (in) fear

And remember your Lord within yourself in humility and in fear without being apparent in speech - in the mornings and the evenings. And do not be among the heedless. (Surah Al-A'raf, 7:205)

إِنَّمَا ذَٰلِكُمُ الشَّيْطَانُ يُخَوِّفُ أَوْلِيَاءَهُ فَلَا تَخَافُوهُمْ وَخَافُونِ إِن كُنتُم مُّؤْمِنِينَ ١٧٥

يُخَوِّفُ yukhawwifu · frightens (you)

That is only Satan who frightens [you] of his supporters. So fear them not, but fear Me, if you are [indeed] believers. (Surah Ali 'Imran, 3:175)

وَمَنْ أَظْلَمُ مِمَّن مَّنَعَ مَسَاجِدَ اللَّهِ أَن يُذْكَرَ فِيهَا اسْمُهُ وَسَعَىٰ فِي خَرَابِهَا أُولَٰئِكَ مَا كَانَ لَهُمْ أَن يَدْخُلُوهَا إِلَّا خَائِفِينَ لَهُمْ فِي الدُّنْيَا خِزْيٌ وَلَهُمْ فِي الْآخِرَةِ عَذَابٌ عَظِيمٌ ١١٤

خَائِفِينَ khāifīna · (like) those in fear

And who are more unjust than those who prevent the name of Allāh from being mentioned [i.e., praised] in His mosques and strive toward their destruction. It is not for them to enter them except in fear. For them in this world is disgrace, and they will have in the Hereafter a great punishment. (Surah Al-Baqarah, 2:114)