Prohibition: Intrinsic Wrongfulness, External Defects, and Legal Effects

1. The meaning of prohibition and its relation to command

فصل في النهي
Chapter on prohibition.

النهي: وهو المنع لغةً
In ordinary Arabic, nahy means preventing or forbidding.

In legal theory, prohibition is a demand to refrain from an act, not merely a comment that the act is undesirable. As a command raises questions about performing an act and its legal force, prohibition raises questions about abstention and its legal consequences.

Two questions must be separated: why is the act forbidden, and if it nevertheless occurs, does it have any legal effect? The answer is not identical for every category.

2. Technical definition and wording of nahy

وفي اصطلاح أهل الأصول: هو استدعاء ترك الفعل بالقول ممن هو دونه
In usul, nahy is a verbal demand by one in a superior position that another refrain from an act.

Lā tafʿal (do not do) is the familiar prohibitive form; for example, “do not lie.” Its default legal force here is prohibition, though reliable contextual indicators may establish admonition, guidance, or another intended sense.

When reading such a text, identify who is addressed, the act prohibited, and the context. The form alone does not settle whether a legal transaction or worship performed in breach of the prohibition has legal effect.

3. The two broad categories of prohibition

والنهي نوعان: نهي عن الأفعال الحسية: كالزنا وشرب الخمر، والكذب والظلم
One class concerns sensory or external acts, such as unlawful sexual intercourse, drinking intoxicants, lying, and injustice.

ونهي عن التصرفات الشرعية
The other class concerns legally constituted acts and transactions, whose status as worship or effective legal dealings depends on the Sharia.

The first class can occur as a physical act independently of legal authorization. In the second, effects such as transfer of ownership or valid worship depend on legal recognition. Prohibition consequently requires different analysis in the two classes.

4. Sensory acts: wrongfulness in the act itself

وحكم النوع الأول: أن يكون المنهي عنه هو عين ما ورد عليه النهي فيكون قبيحاً، فلا يكون مشروعاً أصلاً
In the first category, prohibition falls upon the very act. Its forbidden form is wrong in itself and is not recognized as a lawful act.

Lying or unjust aggression, for example, is not an otherwise valid worship or contract whose legal form can remain in force despite the prohibition. The act itself is the object of censure.

Calling it “not legally prescribed” does not mean that it cannot physically occur: an unlawful act may be committed, but committing it does not make it lawful or valid.

5. Legal acts depend on recognition by law

ونهي عن التصرفات الشرعية: كالنهي عن الصوم في يوم النحر، والصلاة في الأوقات المكروهة، وبيع الدرهم بالدرهمين
The second category includes fasting on the day of sacrifice, prayer in disapproved periods, and a usurious exchange of two dirhams for one.

Fasting and prayer are recognized acts of worship, and sale is a legally constituted transfer. Yet the specific time, condition, or accompanying element makes these examples prohibited.

It must therefore be determined whether the prohibition concerns the act as such or an external condition or attached characteristic of that act.

6. Intrinsic prohibition and prohibition due to another factor

وحكم النوع الثاني: أن يكون المنهي عنه غير ما أضيف إليه النهي، فيكون هو حسناً بنفسه قبيحاً لغيره
The second type of legal prohibition concerns something other than the act’s basic legally recognized essence. The original act can be sound in itself yet blameworthy because of an additional factor.

Wrong in itself: the forbidden element belongs to the act’s own reality.
Wrong through another factor: the basic act is legally meaningful but a connected feature or circumstance makes its performance forbidden.

This distinction does not trivialize the sin. It determines whether the underlying act retains legal existence and what consequences follow.

7. Why legal recognition may remain

النهي عن التصرفات الشرعية يقتضي تقريرها
In this Hanafi treatment, prohibiting a legally constituted act may imply that its basic legal category is intelligible and recognized in the first place.

An act with no legally recognized form cannot be analyzed in precisely the same way as prayer, fasting, or sale performed with a prohibited characteristic. Their underlying legal kind must be distinguished from the forbidden instance.

Continued recognition of the basic category never means that every prohibited instance is lawful or fully valid. Sin, defect, annulment, or lack of legal effect may still be involved.

8. Two sources of external wrongfulness

An act may be wrong through another factor in two ways.

1. Adjacent circumstance: the prohibited feature is an external setting, such as selling at the restricted Friday-call time or praying on usurped land. Sale and prayer remain separate legal kinds.
2. Attached characteristic: the defect is incorporated into the act’s performed form, such as a sale with an unlawful condition or fasting on a specifically prohibited day.

Both may be forbidden, but their legal effects are not necessarily identical. The first involves an accompanying infringement; in the second the actual transaction or act carries a defect.

9. Defective sale versus null sale

Al-bayʿ al-fāsid
A defective sale has a recognizable contractual basis but includes a prohibited condition or characteristic.

Al-bayʿ al-bāṭil
A null sale lacks the legally effective basis for transferring ownership. It cannot simply be treated as an otherwise sound bargain with an incidental flaw.

In the Hanafi distinction, a defective sale is not legally meaningless, but neither is it a permissible and fully sound sale. Some effects can arise after possession while the obligation to undo the defective transaction remains.

10. Effects of possession under a defective sale

البيع الفاسد يفيد الملك عند القبض باعتبار أنه بيع ويجب نقضه باعتبار كونه حراماً لغيره
In a defective sale, ownership can arise upon possession because the transaction retains the basic form of a sale; it must be rescinded because of the prohibited attached defect.

Consider a sale stipulating an unlawful extra benefit. Its contractual basis remains identifiable, yet the stipulation makes it defective. Recognition of a consequence of possession does not legalize the condition.

Two conclusions coexist: an ownership effect may arise, and the transaction may have to be undone or corrected.

11. Prohibition in marriage: lawful subject and witnesses

Marriage is intended to establish a lawful marital relationship. Where the woman herself is legally ineligible for marriage to the person concerned, it is not enough to say that marriage as a category is generally recognized.

Marriage to a prohibited relative: the prohibition conflicts with the very licit relationship the contract would establish; it cannot simply be analogized to a defective sale.

Marriage without witnesses: this involves separate conditions and legal consequences. It should not be treated as identical to a marriage with a prohibited partner. The subject, contract conditions, and consequences require distinct examination.

12. Why marriage and sale are treated differently

Ownership and use can be distinguished in a sale: certain legal effects of ownership may arise even while dealing with the property remains prohibited or the bargain must be undone.

Marriage differs because its essential purpose is to authorize a specific marital relation. Where that very relation is forbidden, one cannot combine the license created by marriage with the prohibition of the same relation in the same circumstances.

Consequently, not all prohibited transactions are governed by one undifferentiated formula. The essential consequence of the contract must be identified first.

13. A vow to fast on Eid

إذا نذر بصوم يوم النحر، وأيام التشريق يصح نذره؛ لأنه نذر بصوم مشروع
If someone vows to fast on the day of sacrifice or the days of tashrīq, the Hanafi discussion separates the legal formation of the vow from the prohibition of fasting on those days.

Fasting as such is an act of worship, so a vow concerning its genus can be recognized; fasting on those specified days remains prohibited. The validity of the vow is not permission to fast on Eid.

Fulfillment is discussed through fasting on an allowable day instead. Jurists differ over the underlying treatment of this vow.

14. A vow to pray at a disapproved time

وكذلك لو نذر بالصلاة في الأوقات المكروهة يصح؛ لأنه نذر بعبادة مشروعة
A vow to pray at a disapproved time is also analyzed by distinguishing prayer, a recognized worship, from the disapproved time selected for it.

The prayer can be delayed until an allowable time, so the obligation of the vow can be fulfilled without performing it at the prohibited moment.

The key is that time as a container can be distinguished from the essence of prayer. This feature produces a different analysis from fasting on a specifically prohibited day.

15. Prayer time versus the day of fasting

For prayer, the appointed time acts as a surrounding interval: once a disapproved time passes, the same type of prayer may be offered during an allowable time. Starting a prayer at the disapproved time has its own rules, but later lawful performance is possible.

In a vowed fast on Eid, the specified day cannot be detached from that day’s act of fasting. The rules of beginning and continuing that fast therefore cannot be copied mechanically from those of prayer.

The relation of time to the act of worship matters when determining how performance can be made lawful or when it must be avoided.

16. Completion of a forbidden performance is not automatic

It is incorrect to assume that every act begun at a prohibited time must be completed simply because it has been started.

For fasting on Eid, the forbidden day is inseparable from the specified fast, so formation of a vow does not license persistence in the prohibited act.

Prayer in certain disapproved times has its own detailed rules because the role of the time differs from fasting. Performance later may be possible.

Principle: the act’s basic legal category, the vow’s formation, beginning during a prohibited period, and the requirements of completion or replacement are separate questions.

17. Intercourse during menstruation: the basis of the ban

ويسألونك عن المحيض قل هو أذى فاعتزلوا النساء في المحيض ولا تقربوهن حتى يطهرن
They ask you about menstruation; say that it is a state of harm, so abstain from intercourse with women during menstruation until they become pure.

The prohibition concerns sexual intercourse during menstruation. Marital intimacy is a lawful category in its proper circumstances, but this particular circumstance makes intercourse forbidden.

The conduct ruling is unambiguous: the prohibited act must not be committed. Whether some legal consequences nevertheless arise from the occurrence is a different issue.

18. Legal consequences can follow forbidden intercourse

وحرمة الفعل لا تنافي ترتب الأحكام
The prohibition of an act does not, by itself, prevent all legal consequences from following its occurrence.

In the example of intercourse during menstruation, the prohibition remains in force. Yet family-law questions arising afterward cannot be dismissed solely because the act was forbidden.

Consequences such as dower or waiting periods require their own conditions. The principle does not assert that every illicit sexual act always creates all the legal consequences of a valid marriage. It separates unlawfulness from the conditions of a particular legal effect.

19. Divorce during menstruation: sin and legal effect

كالطلاق الحائض
Giving divorce during menstruation contravenes the prescribed manner of divorce. In the Hanafi analysis, however, that prohibition does not automatically prevent the divorce from taking legal effect.

The proper way to divorce and the legal effect of words of divorce once pronounced are distinct questions. “The manner is forbidden” does not necessarily entail “no divorce occurred.”

The example illustrates the possibility of both a prohibition and an operative legal consequence; it is not an endorsement of the prohibited conduct.

20. Ablution with usurped water

والوضوء بالمياه المغصوبة
Ablution with usurped water combines the ritual act of purification with an unlawful use of someone else’s property.

The physical and ritual conditions of ablution may be fulfilled while the taking and use of the water are sinful. Legal theory thus distinguishes ritual consequence from violation of property rights.

This distinction does not permit taking another’s water. The wrong of usurpation and the owner’s claim remain; the specific question concerns whether the purification itself has its usual effect.

21. Hunting and slaughter with usurped implements

والاصطياد بقوس مغصوبة، والذبح بسكين مغصوبة
Hunting with a usurped bow and slaughtering with a usurped knife similarly distinguish unlawful use of an implement from the legal consequence of the main act.

Unlawful use: employing another person’s property without permission is prohibited.
Effect of hunting or slaughter: those acts have their own validity conditions, not all of which disappear merely because the implement was taken unlawfully.

Other requirements for lawful slaughter still apply. Ownership of the implement alone never settles the complete ruling on every hunt or slaughter.

22. Prayer on usurped land and sale at the Friday call

والصلاة في الأرض المغصوبة، والبيع في وقت النداء
Prayer on usurped land and trade during the restricted Friday call provide further applications.

Prayer has its own conditions while unlawful possession of the land is a separate wrong. A sale may have a recognizable transactional form while engaging in trade at the relevant call conflicts with the obligation of Friday prayer.

Conclusion: some legal effects of an act may coexist with a sin attached to it. At the same time, where independent conditions for validity are absent, these examples do not make the act valid automatically.

23. An unreliable witness: giving and accepting testimony

ولا تقبلوا لهم شهادةً أبداً
Do not accept their testimony ever.

The legal analysis distinguishes giving testimony from a judge’s acceptance of testimony. A morally disqualified person’s testimony may be rejected in adjudication without treating the spoken act of testimony as nonexistent in every context.

This distinction supports a specific Hanafi discussion of witnesses to a marriage contract. It must not be expanded into the claim that every unreliable witness is acceptable for every legal purpose; courtroom admission remains a separate question.

24. Witnesses, marriage and liʿān

فينعقد النكاح بشهادة الفساق
In this Hanafi usul argument, a marriage contract may be concluded in the presence of morally disqualified witnesses because the prohibition concerns acceptance of testimony, not the bare occurrence of the witnessing act.

Liʿān is treated differently: in this doctrinal argument it is not obligatory for a morally disqualified person, because liʿān consists of legally prescribed testimony-like declarations and disqualification affects their performance.

Together, the examples distinguish the occurrence, the admissibility, and the specific legal consequence of testimony. Recognition in one setting does not establish admission in every other setting.

25. Integrating the rules of prohibition

A legal inquiry into prohibition should proceed in this order:
1. Wording: does the expression indicate a binding prohibition or another sense established by context?
2. Object: is the ban on an external act itself, a contract’s essential effect, an attached defect, or an adjacent circumstance?
3. Consequence: is the act unrecognized, defective, or capable of specific effects despite its unlawful manner?
4. Remedy: is rescission, abstention, proper performance at another time, or fulfillment of another right required?

Separating the conduct ruling from the legal consequences explains how a prohibited act may nonetheless give rise to certain effects.