Qur'anic Root K DH B

Foundational Meaning

The root K DH B fundamentally points to speaking against reality, declaring something untrue, counting something as false, attributing falsity, and breaking the credibility of a report, sign, promise, or message. The issue in this root is not only telling a lie; it is the human being's relation with truth, report, revelation, sign, promise, and responsibility.

Kidhb can come out of the human tongue, or it can take shape as a judgment against the speech and signs of The God: someone counts a true report as false and breaks its credibility.

Important Qur'anic Forms

Important forms of this root in the Qur'an include kadhaba, kadhabū, kadhabat, yakdhibu, yakdhibūn, kadhabtum, kadhdhaba, kadhdhabū, yukadhdhibūn, takdhīb, kādhib, kādhibūn, kādhibah, kadhdhāb, and kadhūb.

Kadhaba can refer to lying, being untrue, or being contrary to reality. Kadhdhaba, in Form II, more often points to counting as false, denying, and declaring something or someone untrue. A kādhib is one who speaks against reality or is a liar. Takdhīb is the process or act of counting as false. Kadhdhāb and kadhūb convey intensity, repetition, or deep-rooted fabrication.

Linguistic Core

The linguistic core of K DH B is the severing of the relation between speech or judgment and reality. When a statement is kidhb, a distance has opened between the claim and reality. When someone denies a sign, messenger, promise, or true report, they do not merely say, "I do not know"; they break its credibility and count it as untrue. Kidhb is therefore connected both to false speech and to a false stance toward truth.

Material Image

The material image of this root can be seen in a guide who should lead a caravan to water and the right road, but gives a false direction and separates people from the reality of the land. In such a case, the problem is not only one wrong sentence; the path of people changes. A lie works in the same way: instead of connecting the human being to reality, speech separates the human being from reality.

Classical Arabic Usage

In classical Arabic usage, kidhb is connected with lying, the untruth of a report, counting a speaker as false, attributing falsity, and sometimes error of perception or inaccurate reporting. Expressions such as error in seeing or a guide's wrong report can show the tangible layer of this root, but in the Qur'anic text the main axis should remain the severing from ṣidq and reality. If a reliable witness from pre-Islamic poetry or older Arabic usage is found, it can be added.

Lying Against The God

One of the main fields of this root is lying against The God:

وَيَقُولُونَ عَلَى اللَّهِ الْكَذِبَ وَهُمْ يَعْلَمُونَ (wa-yaqūlūna 'alā allāhi al-kadhiba wahum ya'lamūn)

And they say falsehood against The God while they know.

Ali 'Imran 3:75

In this verse, kidhb reaches its most dangerous form: false attribution to The God. This is not merely a linguistic error; it is making religion, ruling, promise, or false attribution in the name of The God. When a human being attributes to The God something that is not from The God, the measure of religion is polluted and people are turned away from truth in the name of The God.

Another verse says:

فَمَنْ أَظْلَمُ مِمَّن كَذَبَ عَلَى اللَّهِ (fa-man aẓlamu mimman kadhaba 'alā allāh)

So who is more unjust than one who lied against The God?

Az-Zumar 39:32

Lying against The God is among the severest forms of injustice in the Qur'an, because it does not deceive only one individual; it shifts the measure of truth. Here kidhb is tied to injustice: the right of The God and the right of people are both violated.

The same verse continues:

وَكَذَّبَ بِالصِّدْقِ إِذْ جَاءَهُ (wa-kadhdhaba bi-al-ṣidqi idh jā'ahu)

And he counted ṣidq as false when it came to him.

Az-Zumar 39:32

This pairing is very important. The one who lies against The God often also counts as false the ṣidq that comes from The God. Two movements occur together: on one side, false speech is attributed to The God; on the other, the true speech of The God is rejected. This is one of the most dangerous forms of religious inversion.

Denying the Signs of The God

The second field is denying the signs of The God:

وَالَّذِينَ كَذَّبُوا بِآيَاتِنَا أُولَـٰئِكَ أَصْحَابُ النَّارِ (wa-alladhīna kadhdhabū bi-āyātinā ulā'ika aṣḥābu al-nār)

And those who counted Our signs as false, they are the companions of the Fire.

Al-Baqarah 2:39

In this verse, kadhdhabū does not mean telling a lie; it means counting the signs as false. The sign has come, the indication has become clear, but the human being counts it as untrue and rejects its credibility. This kind of kidhb is a stance against guidance.

Another verse says:

وَالَّذِينَ كَذَّبُوا بِآيَاتِنَا صُمٌّ وَبُكْمٌ فِي الظُّلُمَاتِ (wa-alladhīna kadhdhabū bi-āyātinā ṣummun wa-bukmun fī al-ẓulumāt)

And those who counted Our signs as false are deaf and mute in darknesses.

Al-An'am 6:39

Denying the signs is not merely a mental opinion; it closes the path of receiving truth. When the human being counts the signs as untrue, they no longer hear correctly, answer correctly, or remain in light. The Qur'an pictures this through ṣumm, bukm, and ẓulumāt.

Denying the Messengers

The third field is denying the messengers:

كَذَّبَتْ قَوْمُ نُوحٍ الْمُرْسَلِينَ (kadhdhabat qawmu nūḥin al-mursalīn)

The people of Nuh counted the messengers as false.

Ash-Shu'ara' 26:105

The people of Nuh were outwardly facing one messenger, yet the Qur'an says that they counted the messengers as false. This shows that denying one true prophet is a denial of the principle of divine messengerhood, because the messengers come from one source and their call is one in tawhid, taqwa, and reform.

In the same surah, this structure is repeated concerning 'Ad, Thamud, the people of Lut, and others. The repetition of kadhdhabat qawmu... al-mursalīn shows that denial is a historical pattern of rebellious communities: a clear message comes, but the people count it as untrue to preserve power, habit, benefit, or pride.

Denying Judgment and the Hereafter

The fourth field is denying the Day of Judgment and the Hereafter:

أَرَأَيْتَ الَّذِي يُكَذِّبُ بِالدِّينِ (ara'ayta alladhī yukadhdhibu bi-al-dīn)

Have you seen the one who counts the judgment as false?

Al-Ma'un 107:1

In this verse, yukadhdhibu bi-al-dīn is not only theoretical denial of the Hereafter; the rest of the surah shows that it has practical effects:

فَذَٰلِكَ الَّذِي يَدُعُّ الْيَتِيمَ (fa-dhālika alladhī yadu''u al-yatīm)

That is the one who pushes away the orphan.

Al-Ma'un 107:2

Denying the dīn ruins social ethics. The one who counts accounting and judgment as false becomes careless toward the orphan, the needy, salat, and social responsibility. Thus kidhb concerning the Hereafter is not only belief; it forms behavior.

In Surah Al-Mutaffifin, it also says:

وَمَا يُكَذِّبُ بِهِ إِلَّا كُلُّ مُعْتَدٍ أَثِيمٍ (wa-mā yukadhdhibu bihi illā kullu mu'tadin athīm)

And none counts it as false except every transgressing sinner.

Al-Mutaffifin 83:12

Here, denial of the Day of Judgment is tied to transgression and sin. Sometimes the human being denies the accounting because they want to cross the limit. Denial is not only the result of not knowing; sometimes it is a tool for freeing the self from responsibility.

Lying as Self-Deception

The fifth field is lying as self-deception:

انظُرْ كَيْفَ كَذَبُوا عَلَىٰ أَنفُسِهِمْ (unẓur kayfa kadhabū 'alā anfusihim)

Look how they lied against themselves.

Al-An'am 6:24

Lying is not only in relation to others; the human being can also lie against themselves. This kind of kidhb means that the human being builds an untrue image of themselves, their action, or their station. Self-deception is one of the most dangerous forms of kidhb, because the human being no longer sees the truth within themselves.

The verse continues:

وَضَلَّ عَنْهُم مَّا كَانُوا يَفْتَرُونَ (wa-ḍalla 'anhum mā kānū yaftarūn)

And what they used to fabricate disappeared from them.

Al-An'am 6:24

What the human being builds to defend themselves separates from them at the moment of truth. Self-deception does not endure; it collapses before the unveiling of truth.

Denying Without Encompassing Knowledge

The sixth field is denying something whose knowledge the human being has not yet encompassed:

بَلْ كَذَّبُوا بِمَا لَمْ يُحِيطُوا بِعِلْمِهِ وَلَمَّا يَأْتِهِمْ تَأْوِيلُهُ (bal kadhdhabū bimā lam yuḥīṭū bi-'ilmihi walammā ya'tihim ta'wīluh)

Rather, they counted as false what they had not encompassed in knowledge, while its final unfolding had not yet come to them.

Yunus 10:39

This verse is very important. Sometimes the human being denies something not because they examined it and reached its falsehood, but because they have not yet encompassed its knowledge. Inability to understand must not become denial. The Qur'an condemns this haste: the human being has no right to count something as untrue when its truth and outcome have not yet become clear to them.

This verse draws an important boundary between "I do not know" and "it is false." Not knowing, if joined with humility, can be the beginning of understanding. But not knowing, if joined with arrogance, becomes denial.

Attributing Falsehood to the Messenger and Revelation

The seventh field is attributing falsehood to the messenger and breaking the credibility of revelation:

وَقَالَ الَّذِينَ كَفَرُوا إِنْ هَـٰذَا إِلَّا إِفْكٌ افْتَرَاهُ (wa-qāla alladhīna kafarū in hādhā illā ifkun iftarāh)

And those who covered truth said: This is nothing but a twisted falsehood he fabricated.

Al-Furqan 25:4

Here the word ifk appears, but it is close to the field of kidhb. Denial of revelation often comes with accusation-making: they say the messenger made it up, lied, is a poet, is a magician, or brought it from himself. These attributions are meant to break the credibility of the message.

Against such attributions, the Qur'an says:

قُلْ إِنِ افْتَرَيْتُهُ فَعَلَيَّ إِجْرَامِي (qul ini iftaraytuhu fa-'alayya ijrāmī)

Say: If I fabricated it, then my crime is upon me.

Hud 11:35

These verses show that the field of kidhb is close to iftirā'. Iftirā' means fabricating and attributing falsely; kidhb is falsehood, being untrue, or counting as false.

Kidhb Against Ṣidq

The eighth field is kidhb against ṣidq:

فَمَنْ أَظْلَمُ مِمَّن كَذَبَ عَلَى اللَّهِ وَكَذَّبَ بِالصِّدْقِ إِذْ جَاءَهُ (fa-man aẓlamu mimman kadhaba 'alā allāhi wa-kadhdhaba bi-al-ṣidqi idh jā'ah)

So who is more unjust than one who lied against The God and counted ṣidq as false when it came to him?

Az-Zumar 39:32

After that it says:

وَالَّذِي جَاءَ بِالصِّدْقِ وَصَدَّقَ بِهِ أُولَـٰئِكَ هُمُ الْمُتَّقُونَ (wa-alladhī jā'a bi-al-ṣidqi wa-ṣaddaqa bihi ulā'ika humu al-muttaqūn)

And the one who came with ṣidq and confirmed it, those are the people of taqwa.

Az-Zumar 39:33

Here two fronts stand opposite one another: kidhb and takdhīb against ṣidq and taṣdīq. The people of kidhb either lie against The God, or count ṣidq as false when it comes. The people of taqwa come with ṣidq and confirm it. The main opposite of kidhb is therefore ṣidq: the right bond of speech, heart, action, and judgment with truth.

Difference Between Kadhaba and Kadhdhaba

A distinction must be made between kadhaba and kadhdhaba. Kadhaba can mean lying or being untrue. Kadhdhaba more often means counting another person, message, sign, messenger, promise, or indication as false. Someone who commits kadhaba 'alā Allāh attributes something false to The God. Someone who commits kadhdhaba bi-āyāt Allāh counts the signs of The God as untrue. The first is fabrication and false attribution; the second is rejection and breaking the credibility of truth that has come.

Structural Notes

Structurally, the prepositions are important. Kadhaba 'alā Allāh means he lied against The God, attributing to The God something that is not from The God. Kadhdhaba bi-āyātinā means he counted Our signs as false and rejected their credibility. Kadhdhaba bi-al-ḥaqq means he counted the truth as untrue when it came. Kadhdhaba bi-al-dīn means he counted judgment, accounting, or religion as false. Kadhabū 'alā anfusihim means they lied against themselves and deceived themselves.

Nearby Roots

K DH B differs from several nearby roots. Ṣidq is the main opposite of kidhb: ṣidq is the harmony of speech, report, or stance with reality and truth. Ifk is a falsehood that turns reality upside down and reverses the direction of understanding. Iftirā' is fabricating and attributing falsely; every iftirā' contains kidhb, but not every kidhb is necessarily a detailed iftirā'. Buhtān is a false attribution that leaves a person stunned and defenseless. Zūr is false and distorted speech or testimony. Kharṣ is baseless guessing and conjecture-making. Juḥūd is conscious denial after recognition. Inkār can mean not accepting or not recognizing; kadhdhaba is stronger, because it counts truth as untrue.

Translation Suggestions for Forqan

In Forqan translation, K DH B must be rendered according to context. Kadhaba can be translated as lied, spoke falsely, lied against, or spoke against reality. Kadhaba 'alā Allāh is best rendered as lied against The God or attributed falsehood to The God. Kadhdhaba bi-āyātinā is best rendered as counted Our signs as false or regarded Our signs as untrue, not merely denied if that remains unclear for the reader. Kadhdhaba bi-al-dīn can be rendered as counted judgment/accounting as false. Kādhib is liar or false speaker. Takdhīb is counting as false or regarding as untrue.

Linguistic Summary

The root K DH B indicates the breaking of the relation of speech, report, or judgment with reality. Sometimes the human being speaks against reality; sometimes they lie against The God; sometimes they count the signs, messengers, promise, dīn, or Hereafter as false; and sometimes they lie against themselves. In the Qur'an, kidhb is not only a speech error; it is a stance against truth.

Its most dangerous form is false attribution to The God and counting ṣidq as false when it has come. Its opposite is ṣidq and taṣdīq: the right bond of speech, heart, action, and judgment with truth.