The Quran root ك ي ل k-y-l

وَلَا تَقْرَبُوا مَالَ الْيَتِيمِ إِلَّا بِالَّتِي هِيَ أَحْسَنُ حَتَّىٰ يَبْلُغَ أَشُدَّهُ وَأَوْفُوا الْكَيْلَ وَالْمِيزَانَ بِالْقِسْطِ لَا نُكَلِّفُ نَفْسًا إِلَّا وُسْعَهَا وَإِذَا قُلْتُمْ فَاعْدِلُوا وَلَوْ كَانَ ذَا قُرْبَىٰ وَبِعَهْدِ اللَّهِ أَوْفُوا ذَٰلِكُمْ وَصَّاكُم بِهِ لَعَلَّكُمْ تَذَكَّرُونَ ١٥٢

الْكَيْلَ l-kayla · [the] measure

And do not approach the orphan's property except in a way that is best [i.e., intending improvement] until he reaches maturity. And give full measure and weight in justice. We do not charge any soul except [with that within] its capacity. And when you speak [i.e., testify], be just, even if [it concerns] a near relative. And the covenant of Allāh fulfill. This has He instructed you that you may remember. (Surah Al-An'am, 6:152)

وَإِلَىٰ مَدْيَنَ أَخَاهُمْ شُعَيْبًا قَالَ يَا قَوْمِ اعْبُدُوا اللَّهَ مَا لَكُم مِّنْ إِلَٰهٍ غَيْرُهُ قَدْ جَاءَتْكُم بَيِّنَةٌ مِّن رَّبِّكُمْ فَأَوْفُوا الْكَيْلَ وَالْمِيزَانَ وَلَا تَبْخَسُوا النَّاسَ أَشْيَاءَهُمْ وَلَا تُفْسِدُوا فِي الْأَرْضِ بَعْدَ إِصْلَاحِهَا ذَٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُم مُّؤْمِنِينَ ٨٥

الْكَيْلَ l-kayla · [the] measure

And to [the people of] Madyan [We sent] their brother Shuʿayb. He said, "O my people, worship Allāh; you have no deity other than Him. There has come to you clear evidence from your Lord. So fulfill the measure and weight and do not deprive people of their due and cause not corruption upon the earth after its reformation. That is better for you, if you should be believers. (Surah Al-A'raf, 7:85)

وَإِلَىٰ مَدْيَنَ أَخَاهُمْ شُعَيْبًا قَالَ يَا قَوْمِ اعْبُدُوا اللَّهَ مَا لَكُم مِّنْ إِلَٰهٍ غَيْرُهُ وَلَا تَنقُصُوا الْمِكْيَالَ وَالْمِيزَانَ إِنِّي أَرَاكُم بِخَيْرٍ وَإِنِّي أَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ مُّحِيطٍ ٨٤

الْمِكْيَالَ l-mik'yāla · (from) the measure

And to Madyan [We sent] their brother Shuʿayb. He said, "O my people, worship Allāh; you have no deity other than Him. And do not decrease from the measure and the scale. Indeed, I see you in prosperity, but indeed, I fear for you the punishment of an all-encompassing Day. (Surah Hud, 11:84)

فَلَمَّا رَجَعُوا إِلَىٰ أَبِيهِمْ قَالُوا يَا أَبَانَا مُنِعَ مِنَّا الْكَيْلُ فَأَرْسِلْ مَعَنَا أَخَانَا نَكْتَلْ وَإِنَّا لَهُ لَحَافِظُونَ ٦٣

نَكْتَلْ naktal · (that) we will get measure

So when they returned to their father, they said, "O our father, [further] measure has been denied to us, so send with us our brother [that] we will be given measure. And indeed, we will be his guardians." (Surah Yusuf, 12:63)

وَأَوْفُوا الْكَيْلَ إِذَا كِلْتُمْ وَزِنُوا بِالْقِسْطَاسِ الْمُسْتَقِيمِ ذَٰلِكَ خَيْرٌ وَأَحْسَنُ تَأْوِيلًا ٣٥

كِلْتُمْ kil'tum · you measure

And give full measure when you measure, and weigh with an even [i.e., honest] balance. That is the best [way] and best in result. (Surah Al-Isra, 17:35)