The Nature of Faith: Inward Assent, Verbal Profession, and Actions

1. The lexical meaning of īmān

وَالإِيمَانُ فِي اللُّغَةِ التَّصْدِيقُ
In lexical usage, īmān means assent or affirmation.

Taṣdīq concerns accepting the truth of a report. The mind may understand what a statement claims without yet affirming that it is true. Understanding the words and assenting to their truth are distinct acts.

The classical account also considers submission, acceptance, and acknowledgment among the shades of meaning. They indicate an affirmative reception of the report, rather than the bare recognition that someone has uttered it.

2. Qur’anic usage: You will not believe us

وَمَا أَنْتَ بِمُؤْمِنٍ لَنَا
“And you will not believe us.” (Yūsuf 12:17)

Here bi-muʾminin lanā means accepting the brothers' report as true. The usage supports the lexical sense of īmān as assent to a report.

In a religious context, the object of that assent must also be identified: what the Messenger ﷺ brought from Allah. Accepting the truth of an unrelated statement is not, in itself, the technical meaning of religious faith.

3. Assent is more than labeling a report

وَلَيْسَتْ حَقِيقَةُ التَّصْدِيقِ أَنْ تَقَعَ فِي الْقَلْبِ نِسْبَةُ الصِّدْقِ إِلَى الْخَبَرِ
The reality of assent is not simply that the mind associates truth with a report.

A person can understand that a report claims something happened, or consider its truth hypothetically, without accepting it. The account of faith therefore includes reception and acknowledgment, not just representation of a statement's content.

This distinction addresses the objection that merely recognizing the truth of a prophet while deliberately resisting or denying him should count as faith. Bare recognition is not treated as adequate assent.

4. The technical definition of faith

فَاعْلَمْ أَنَّ الْإِيمَانَ فِي الشَّرْعِ هُوَ التَّصْدِيقُ بِمَا جَاءَ بِهِ مِنْ عِنْدِ اللَّهِ تَعَالَى
In the religious sense, faith is affirmation of what the Messenger brought from Allah Most High.

The definition has two components: the act of assent and the content assented to. It is not limited to the historical assertion that a prophet existed; it affirms his mission and the divine message he conveyed.

This does not require separately rehearsing every doctrine at all times. General assent establishes the basis, while detailed faith makes particular beliefs explicit.

5. Affirming the Messenger and the divine message

أَيْ تَصْدِيقُ النَّبِيِّ ﷺ بِالْقَلْبِ
That is, inwardly affirming the Prophet ﷺ.

This entails accepting as true what he decisively conveyed from Allah as religion. It does not license attaching unverified historical reports to the message and treating them as necessary articles of faith.

Example: Affirming a firmly established teaching while refusing to make an unverified story into a creed both reflect care for the content of revelation. Proving attribution and assenting to its content must be kept distinct.

6. Widely established teachings and detailed assent

فِي جَمِيعِ مَا عُلِمَ بِالضَّرُورَةِ مَجِيئُهُ بِهِ مِنْ عِنْدِ اللَّهِ تَعَالَى
Concerning everything decisively known to have been brought from Allah.

Here known necessarily does not mean that every religious proposition is self-evident in formal logic. It identifies teachings whose attribution to the Prophet ﷺ is decisive and publicly established. Other subtle questions require interpretation or inference.

A willful denial of a decisively established religious tenet is therefore not simply equated with a mistaken position in a difficult inferential dispute. The distinction matters both to defining faith and to judging individual cases.

7. General and detailed faith

Al-īmān al-ijmālī: general acceptance of the true message of the Messenger ﷺ.
Al-īmān al-tafṣīlī: affirming particular doctrines individually.

General assent connects a person with the truthful divine message. As knowledge develops, that assent becomes articulated in such matters as prayer, fasting, and the Last Day.

Growing in detailed knowledge does not automatically mean there was no essential assent beforehand. Yet deliberately denying a teaching once its decisive meaning and attribution are clear differs from simply not having encountered its details.

8. The status of verbal profession

وَالإِقْرَارُ بِهِ أَيْ بِاللِّسَانِ
And professing it verbally.

The testimony of faith and other clear professions make inward belief publicly recognizable. Since people cannot directly inspect one another's hearts, profession is a principal external basis for the community's legal dealings.

Verbal profession and inward assent are not identical in every respect. A hypocrite's words may outwardly resemble those of a sincere believer, although their inner state differs. Hence the treatment of outward rulings and inward reality must remain distinct.

9. Profession: constituent or legal condition?

وَإِنَّمَا الإِقْرَارُ شَرْطٌ لِإِجْرَاءِ الأَحْكَامِ فِي الدُّنْيَا
Verbal profession is a condition for applying worldly rulings.

An influential Ḥanafī–Māturīdī formulation treats inward assent as the essence of faith and verbal profession as a condition for its external legal application. Other scholars incorporate both into their definition. The disagreement concerns whether one is identifying faith's inner reality or its public legal manifestation.

Example: Marriage, funerals, inheritance, and communal dealings rely on publicly recognizable legal status. A judge cannot inspect hearts, so the law proceeds from outward evidence.

10. Inability to profess verbally

Someone may truly believe inwardly but be unable to speak, prevented from speaking, or subjected to coercion. Inability to move the tongue is therefore not automatically evidence of inward denial.

The absence of an uttered profession can arise from very different circumstances: refusal, lack of opportunity, physical inability, or coercion. These cannot all be assigned the same judgment about inner assent.

Public legal status still follows reliable available evidence, which may include an appropriate sign or other established indicators. Complete knowledge of the person's inner state belongs to Allah.

11. Profession without assent: hypocrisy

وَمَنْ أَقَرَّ بِلِسَانِهِ وَلَمْ يُصَدِّقْ بِقَلْبِهِ كَالْمُنَافِقِ
One who professes with the tongue without inward assent is like a hypocrite.

In doctrinal hypocrisy, outward profession coexists with inner rejection. Worldly dealings may be based on what is outwardly shown, but an insincere profession does not conceal inner rejection from Allah.

Consequently: The public declaration of faith is significant evidence for applying outward rulings. It does not authorize others to claim certain access to someone's hidden intentions or hypocrisy.

12. Assent without an outward declaration

فَمَنْ صَدَّقَ بِقَلْبِهِ وَلَمْ يُقِرَّ بِلِسَانِهِ، فَهُوَ مُؤْمِنٌ عِنْدَ اللَّهِ
Whoever truly assents inwardly without professing verbally is a believer before Allah.

This formulation turns on the existence of genuine inward assent, not mere familiarity or an unsupported claim. An absent declaration can complicate worldly recognition without demonstrating that no assent exists in the person's heart.

However, deliberate refusal to profess without excuse has its own legal and theological discussion. No one may confidently determine an individual's inner state through guesswork alone.

13. Continuity of faith and momentary inattention

التَّصْدِيقُ بَاقٍ فِي الْقَلْبِ، وَالذُّهُولُ إِنَّمَا هُوَ عَنْ حُصُولِهِ
Assent continues in the heart; inattention concerns its conscious presence.

People sleep, work, and attend to other matters without rehearsing their beliefs every moment. This does not mean faith disappears and reappears repeatedly. Persistence of a conviction and active awareness of it are different states.

Analogy: Someone can know a mathematical principle without consciously thinking of it throughout a conversation. Failure to attend to an established conviction does not immediately extinguish it.

14. Scriptural evidence for inward faith

أُولَٰئِكَ كَتَبَ فِي قُلُوبِهِمُ الْإِيمَانَ
“These are the ones in whose hearts He has inscribed faith.” (Al-Mujādilah 58:22)

وَلَمَّا يَدْخُلِ الْإِيمَانُ فِي قُلُوبِكُمْ
“Faith has not yet entered your hearts.” (Al-Ḥujurāt 49:14)

Both passages explicitly place faith in relation to the heart. They therefore resist any reduction of faith to spoken words alone. Verbal profession remains a means of public manifestation and legal recognition.

The centrality of inward assent is compatible with the importance of profession for worldly dealings.

15. Islam and faith in outward and inward use

قَالَتِ الْأَعْرَابُ آمَنَّا قُلْ لَمْ تُؤْمِنُوا وَلَٰكِنْ قُولُوا أَسْلَمْنَا
“The Bedouins say: We believe. Say: You have not believed; rather say: We have submitted.” (Al-Ḥujurāt 49:14)

The verse distinguishes outward submission from inward faith in this context. Islam and īmān are not invariably used in the same technical contrast in every passage; context identifies the intended sense.

Here, external submission by itself does not guarantee inward assent. Yet public religious identification still has a separate role in worldly rulings.

16. The claim that faith is speech alone

A position attributed particularly to the Karrāmiyyah identifies faith with verbal profession alone. Its central difficulty is that someone who is inwardly insincere may repeat the exact formula spoken by a sincere believer.

Qur’anic evidence: Some people say, “We believe,” while in truth they do not believe (Al-Baqarah 2:8). A verbal-only definition struggles to explain this distinction between outward speech and inward faith.

This must not be confused with the separate issue of how courts and communities apply outward legal rulings. Reliance on outward evidence does not render inward belief irrelevant.

17. Righteous deeds and the essence of faith

وَأَمَّا الأَعْمَالُ أَيِ الطَّاعَاتُ، فَهِيَ تَزَايُدٌ فِي نَفْسِهَا
Acts of obedience can increase or decrease in themselves.

Are prayer, fasting, and other acts constituent parts of faith's essence or its obligations, perfections, and fruits? The answer differs among schools. The theological account emphasized here defines the essence through assent and connects deeds to faith as its serious consequences.

This does not make deeds optional. Religious duties remain binding and sins remain wrong. The technical question is whether a lapse in action necessarily extinguishes the underlying inward affirmation.

18. The conjunction: faith and righteous deeds

إِنَّ الَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ
“Indeed, those who believe and do righteous deeds.”

The conjunction wa joins faith and righteous action. One argument takes the coordinated wording to distinguish the concepts: belief and deeds are mentioned separately, so deeds are not identical with the core definition of belief.

An objection notes that language can coordinate a part with its whole. Thus the argument must be assessed alongside broader usage and other texts. A conjunction by itself need not settle every dimension of the debate.

19. Condition and conditioned: what the examples show

وَمَنْ يَعْمَلْ مِنَ الصَّالِحَاتِ مِنْ ذَكَرٍ أَوْ أُنْثَىٰ وَهُوَ مُؤْمِنٌ
“Whoever performs righteous deeds, male or female, while being a believer…” (Al-Nisāʾ 4:124)

The verse speaks of being a believer as a condition in its description of righteous deeds. The argument distinguishes the state of faith from the actions performed under that condition.

However, being a condition and being a constituent are different technical notions. The verse illuminates the direction of the argument, but one must still read the various theological definitions in their own precise senses.

20. Sinful believers and the persistence of faith

وَإِنْ طَائِفَتَانِ مِنَ الْمُؤْمِنِينَ اقْتَتَلُوا فَأَصْلِحُوا بَيْنَهُمَا
“If two groups of believers fight, reconcile them.” (Al-Ḥujurāt 49:9)

Fighting may constitute a grave sin, yet the verse still calls the two parties believers. This supports the argument that every major sin does not, by itself, erase the essential assent of faith—even though the offense remains serious.

This connects with the prior treatment of major sinners. Committing a prohibited act and denying a decisively established religious truth are not interchangeable conditions.

21. Positions that include actions in faith

Some traditionists, jurists, and theologians describe faith through inward assent, verbal profession, and bodily actions. The implications of this formula differ: it does not follow that every scholar using it regards every omitted duty as total unbelief.

The text attributes a more severe connection between grave wrongdoing and unbelief to the Khārijites, while discussing the Muʿtazilī doctrine of the intermediate position. The current theological treatment emphasizes distinguishing basic assent from its duties and perfections.

A school's statement that “deeds enter faith” does not determine its full doctrine of excommunication. One must also ask how it uses the word faith and what it says about loss of faith.

22. Speech, belief, and deed: comparing definitions

View 1 — inward assent: Faith's essential reality is heartfelt acceptance.
View 2 — assent plus profession: Both inward assent and verbal declaration occur in the definition.
View 3 — assent, profession, and works: Some scholars give a broader definition that includes obedience by the limbs.
View 4 — profession alone: This view faces the objection from outward hypocrisy.

The mainstream formulations do not imply that duties cease to bind or sins cease to matter. Their technical difference concerns which components enter the definition of faith and which are its conditions, consequences, or perfections.

23. Limits of judgments about an individual’s faith

Outward judgment: Public and legal dealings depend on reliable words and acts.
Inward reality: Ultimate knowledge of sincerity, conviction, and hypocrisy belongs to Allah.
Judgment of actions: Whether an act occurred, how serious it was, and whether a doctrine was denied are separate inquiries.

Thus a believer's weakness does not itself justify claiming certain knowledge of inward rejection. Conversely, an uttered formula does not give other people absolute access to inner sincerity.

This distinction protects both the functioning of outward religious law and the limits of human knowledge about hidden hearts.

24. The nature of faith and the obligations of action

Faith's core: Heartfelt affirmation of the decisively established divine message delivered by the Messenger ﷺ.
Profession's role: Public expression and the basis of outward rulings.
The demand of deeds: Obedience, fulfillment of duties, avoidance of sin, and visible consequences of faith.

These distinctions avoid two extremes: treating spoken words alone as the complete inner reality in every case, and treating every lapse in conduct as the total disappearance of belief.

The obligations themselves remain fully binding. Separating deeds from the core definition in a particular theological formulation does not grant permission to neglect them; it distinguishes the existence of assent from its obedient fulfillment.

25. Integrated conclusion of the evidence

Lexically: Faith is related to assent, acceptance, and acknowledgment.
Technically: Its object is the religion authentically brought from Allah by the Messenger ﷺ.
Heart and tongue: Inner assent and outward profession are related but distinguishable for theological and legal purposes.
Actions: Their religious obligation is clear, while schools differ in how they enter the technical definition of faith.

A sincere religious life unites recognition of truth, inward acceptance, and fulfillment of divine commands. The scholarly distinctions identify the different roles of definition, outward evidence, duty, and perfection without severing that connection.

The next discussion of the increase or decrease of faith builds on these foundations.