The Quran root ك ف ف k-f-f

أَلَمْ تَرَ إِلَى الَّذِينَ قِيلَ لَهُمْ كُفُّوا أَيْدِيَكُمْ وَأَقِيمُوا الصَّلَاةَ وَآتُوا الزَّكَاةَ فَلَمَّا كُتِبَ عَلَيْهِمُ الْقِتَالُ إِذَا فَرِيقٌ مِّنْهُمْ يَخْشَوْنَ النَّاسَ كَخَشْيَةِ اللَّهِ أَوْ أَشَدَّ خَشْيَةً وَقَالُوا رَبَّنَا لِمَ كَتَبْتَ عَلَيْنَا الْقِتَالَ لَوْلَا أَخَّرْتَنَا إِلَىٰ أَجَلٍ قَرِيبٍ قُلْ مَتَاعُ الدُّنْيَا قَلِيلٌ وَالْآخِرَةُ خَيْرٌ لِّمَنِ اتَّقَىٰ وَلَا تُظْلَمُونَ فَتِيلًا ٧٧

كُفُّوا kuffū · Restrain

Have you not seen those who were told, "Restrain your hands [from fighting] and establish prayer and give zakāh"? But then when battle was ordained for them, at once a party of them feared men as they fear Allāh or with [even] greater fear. They said, "Our Lord, why have You decreed upon us fighting? If only You had postponed [it for] us for a short time." Say, "The enjoyment of this world is little, and the Hereafter is better for he who fears Allāh. And injustice will not be done to you, [even] as much as a thread [inside a date seed]." (Surah An-Nisa, 4:77)

فَقَاتِلْ فِي سَبِيلِ اللَّهِ لَا تُكَلَّفُ إِلَّا نَفْسَكَ وَحَرِّضِ الْمُؤْمِنِينَ عَسَى اللَّهُ أَن يَكُفَّ بَأْسَ الَّذِينَ كَفَرُوا وَاللَّهُ أَشَدُّ بَأْسًا وَأَشَدُّ تَنكِيلًا ٨٤

يَكُفَّ yakuffa · restrain

So fight, [O Muḥammad], in the cause of Allāh; you are not held responsible except for yourself. And encourage the believers [to join you] that perhaps Allāh will restrain the [military] might of those who disbelieve. And Allāh is greater in might and stronger in [exemplary] punishment. (Surah An-Nisa, 4:84)

يَا أَيُّهَا الَّذِينَ آمَنُوا ادْخُلُوا فِي السِّلْمِ كَافَّةً وَلَا تَتَّبِعُوا خُطُوَاتِ الشَّيْطَانِ إِنَّهُ لَكُمْ عَدُوٌّ مُّبِينٌ ٢٠٨

كَافَّةً kāffatan · completely

O you who have believed, enter into Islām completely [and perfectly] and do not follow the footsteps of Satan. Indeed, he is to you a clear enemy. (Surah Al-Baqarah, 2:208)

لَهُ دَعْوَةُ الْحَقِّ وَالَّذِينَ يَدْعُونَ مِن دُونِهِ لَا يَسْتَجِيبُونَ لَهُم بِشَيْءٍ إِلَّا كَبَاسِطِ كَفَّيْهِ إِلَى الْمَاءِ لِيَبْلُغَ فَاهُ وَمَا هُوَ بِبَالِغِهِ وَمَا دُعَاءُ الْكَافِرِينَ إِلَّا فِي ضَلَالٍ ١٤

كَفَّيْهِ kaffayhi · his hands

To Him [alone] is the supplication of truth. And those they call upon besides Him do not respond to them with a thing, except as one who stretches his hands toward water [from afar, calling it] to reach his mouth, but it will not reach it [thus]. And the supplication of the disbelievers is not but in error [i.e., futility]. (Surah Ar-Ra'd, 13:14)