Causes of Legal Obligations: Time, Worship and Purification

1. The basic meaning of legal causes

فصل في أسباب الأحكام الشرعية
On the causes of religious legal rulings.
الأحكام الشرعية تتعلق بأسبابها
Legal rulings are associated with their causes.

Two questions should be kept separate: what establishes an obligation in law, and when and under which conditions its performance is demanded from a person? The former concerns the sabab of obligation; the latter concerns the address of the command and performance.

The entry of prayer time is associated with obligation, yet the obligation to perform is not addressed to a minor or someone lacking capacity in the same way as to an accountable adult. Confusing these issues produces mistaken conclusions about excuses, time and make-up performance.

2. Why the cause must be identified

لأن الوجوب غيب عنا، فلابد من علامة يعرف بها وجوب الحكم
Obligation is not directly visible to us; it therefore requires an identifiable sign.

A legal duty cannot simply be observed in a physical event. The law associates it with ascertainable matters: prayer with its time, Ramadan fasting with witnessing the month, and zakat with the requisite property.

A sabab is not an independent legislator or an inherent physical force creating the duty. It is the legally assigned basis by which the obligation can be identified and attributed. The legislative source remains the divine command.

3. Underlying and outward legal causes

السبب الحقيقي لنفس الوجوب هو الإيجاب القديم
The underlying basis of obligation is divine legislation.

People require observable circumstances to know when an obligation becomes applicable. Prayer time is therefore called an outward cause, rather than the ultimate source of legislative authority.

This explains why divine law is valid even before a particular prayer time, although that particular prayer cannot be discharged before its appointed time. The source of the law and the legally specified occasion of its performance are different issues.

4. Time as the apparent cause of prayer

فسبب وجوب الصلاة «الوقت»
The apparent legal cause of the prayer obligation is its time.

The command establishes the duty generally; the prescribed period identifies when an individual prayer is due. A performance before that time does not discharge the later obligation.

For example, someone might pray four voluntary units shortly before noon. When the obligatory noon prayer time arrives, that prior voluntary prayer does not retroactively become the obligatory Zuhr prayer, because its appointed occasion was absent.

5. Address of the command versus its occasion

والخطاب مثبت لوجوب الأداء، ومعروف للعبد سبب الوجوب قبله
The legal address establishes performance duties, while the outward cause makes their occasion identifiable.

Knowing a general duty and reaching the occasion for its specific performance need not coincide. A person knows in the morning that Zuhr prayer is obligatory, but the particular obligation is not discharged until its appointed time.

The key distinction is between knowledge of a command and the arrival of the cause that makes this individual performance due.

6. The first analysis: transfer between portions

نقل النسبة من الجزء الأول إلى الثاني إذا لم يؤد في الجزء الأول
If performance does not occur in the first portion, attribution passes to the next.

Under this account, the prayer may be performed validly during an early portion. If it is not performed, the same obligation remains available in subsequent portions until the end of its period.

Delaying Zuhr within its valid period does not create repeated Zuhr obligations. Transfer of attribution explains the changing relevant portion of time; it does not multiply the number of prescribed prayers.

7. Legal capacity at the end of the time

ويعتبر حال العبد في ذلك الجزء
The person's condition in that final portion is taken into account.

A person's status may change during a prayer period—for example from travel to residence or residence to travel. Under the source's analysis, the relevant final portion can determine the form of the still-unperformed obligation.

This is not an encouragement to postpone prayer. It is an analytical rule explaining which personal status governs when a valid obligation remains unperformed and the person's situation changes.

8. From traveller to resident

ولو كان مسافراً في أول الوقت مقيماً في آخره يصلي أربعاً
A person who is a traveller at the start but a resident at the end performs four units.

Suppose the period for a four-unit prayer opens during travel, but the person reaches home without praying and is a resident in the relevant final portion. The obligation is performed in the resident form.

It would be mistaken to infer the shorter form solely from the person's location at the opening of the time. The rule concerns the status governing an obligation that has remained unperformed.

9. From resident to traveller

ولو كان مقيماً في أول الوقت مسافراً في آخره يصلي ركعتين
A resident at the beginning who becomes a traveller by the relevant final portion performs two units.

Reverse the earlier case: the time opens while the person is resident, but the prayer remains unperformed until the person enters the legally recognized state of travel. Under the source's analysis, the shorter form applies.

Comparison:
Travel → residence: four units.
Residence → travel: two units.

The rule turns on the legally recognized change of status before performance, not merely on naming the first place where the time began.

10. Excuses arising during the prayer period

أن يحدث حيض أو نفاس أو جنون مستوعب أو إغماء ممتد في ذلك الجزء
Relevant excuses include menstruation, postnatal bleeding, and specified forms of loss of capacity or consciousness.

Prayer duty and make-up performance depend not only on the existence of a time period but also on the person's legal status. Different excuses have different consequences.

Menstruation and postnatal bleeding must not be conflated with the separate duration-sensitive rules for insanity or loss of consciousness. Ordinary sleep, momentary distraction and extended incapacity do not automatically share one legal outcome.

11. Changes in legal capacity near the end

أو كان كافراً في أول الوقت مسلماً في ذلك الجزء، أو كانت حائضاً أو نفساء في أول الوقت طاهرة في ذلك الجزء وجبت الصلاة
If Islam or the end of a relevant ritual excuse occurs in the pertinent portion of time, the prayer obligation can arise.

A status existing at the beginning does not invariably determine the entire period. If legal capacity and the conditions for an obligatory prayer exist within the relevant portion, a duty can attach.

The precise minimum time and detailed purification rules require their own juristic conditions. The principle taught here is the relation between an existing cause and the emergence of legal accountability.

12. Fajr at sunrise

إن آخر الوقت في الفجر كامل، وإنما يصير الوقت فاسداً بطلوع الشمس، وذلك بعد خروج الوقت
The final segment of Fajr is complete; sunrise brings the disapproved state after that prayer's time has ended.

A prayer in progress when the sun rises has a particular Hanafi ruling. This differs from Asr toward sunset because the disapproved period enters only after the appointed Fajr period has ended.

The key is to distinguish a defect occurring within the period from a new disapproved state beginning beyond the period. Merely saying “near the end of prayer time” conceals this difference.

13. Asr during the sun’s yellowing

ولو كان ذلك الجزء ناقصاً كما في صلاة العصر فإن آخر الوقت وقت احمرار الشمس
Asr may enter a deficient, disapproved portion of its own prayer period near sunset.

Unlike Fajr at sunrise, the problematic state here can occur before the prescribed time has fully ended. The author uses that difference to explain different legal consequences for a prayer performed at the end of its window.

For Fajr, sunrise ends the period; for Asr, a disapproved quality can arise while the period is still running. The legal character of the time, not simply proximity to its endpoint, matters.

14. Comparing the two analyses of time

IssueTransfer of attributionEach portion as a causeWhere the cause operatesAttribution moves through portionsEach portion can be legally relevantNumber of obligationsOne prayerOne prayerWhy not multiple duties?Transfer does not multiply the dutyMultiple possible occasions need not multiply performance

الطريق الثاني: أن يجعل كل جزء من أجزاء الوقت سبباً لا على طريق الانتقال
The second method regards each part of the time as a cause without relying on transfer.

Both approaches explain obligations within a window while avoiding the erroneous conclusion that many separate obligatory prayers arise from one scheduled prayer period.

15. Witnessing Ramadan as the fasting cause

وسبب وجوب الصوم شهود الشهر
The cause of obligatory fasting is witnessing, or being present in, the month.
فمن شهد منكم الشهر فليصمه
Whoever among you witnesses the month should fast it.

Ramadan is the legally identified occasion of the fasting obligation, while illness, travel and other excuses affect performance. The period's relation to fasting is not identical in every detail to a daily prayer period.

“Witnessing the month” is a legal notion of being present during the prescribed month; it does not make individual naked-eye observation of the moon the only conceivable way the rule can apply.

16. A month’s obligation and daily observances

وإضافة الصوم إليه
The association of fasting with the month.

Ramadan is a defined period, but the daily observances retain their legally prescribed number and structure. The unity of a month does not reduce the obligation to one fasting day, nor does every hour create an independent fast.

A person who fasts the first day has not thereby performed the second day's fast. Conversely, morning and afternoon of one fast are not separate obligatory fasts. A cause must be understood with the law's specified unit of performance.

17. Growth-capable nisab as the cause of zakat

وسبب وجوب الزكاة ملك النصاب النامي حقيقة أو حكماً
The cause of zakat is ownership of a qualifying nisab with actual or legally recognized growth capacity.

Nisab is the legally specified threshold, and “growing” includes both literal productive property and categories treated as growth-capable in law. Other required conditions, including the passage of a year where applicable, are not discarded.

Business inventory illustrates property intended for growth, while money may be treated as capable of growth in law. It does not follow that every valuable personal-use object has the same zakat status.

18. Cause and timing of zakat payment

وباعتبار وجوب السبب جاز التعجيل في باب الأداء
Advance payment can be considered in light of the existence of the legal cause.

In the source's treatment of zakat, ownership of nisab and the lapse of a year have distinct functions. Where the relevant original cause exists, advance payment before the year ends may be valid under the applicable conditions.

Giving money labeled “zakat” before owning any qualifying nisab is not legally the same as advancing zakat after the relevant ownership threshold has been met. The first lacks the foundational cause; the second raises a permitted timing question.

19. The House as the cause in the Hajj analysis

وسبب وجوب الحج «البيت» لإضافته إلى البيت
The source connects the Hajj obligation to the Sacred House, to which the pilgrimage is related.

Ability to undertake the pilgrimage remains a crucial condition, but identifying a condition is not identical to identifying the cause. The association with the House and the person's ability play distinct roles.

A person who duly fulfills the obligatory Hajj does not acquire a new obligatory Hajj each calendar year merely because the House still exists. The source distinguishes the unity of the occasion, qualifying conditions and the law's specified amount of performance.

20. Ability and the once-in-a-lifetime obligation

وعدم تكرار الوظيفة في العمر
The obligatory Hajj is not repeated as a fresh lifetime obligation each year.

A person's ability is relevant to when pilgrimage is binding on that individual. Once its requirements are satisfied and the obligatory pilgrimage has been duly performed, the basic duty is not annually renewed merely by the continuing existence of the House.

Zakat can recur when its legally required financial conditions recur, whereas the obligatory Hajj has a different prescribed frequency. The existence or persistence of a cause does not determine frequency without the governing legal rule.

21. The cause of sadaqat al-fitr

وسبب وجوب صدقة الفطر رأس يمونه ويلي عليه
The source relates the cause of sadaqat al-fitr to a person who falls under one's legally relevant support and guardianship.

Maintenance and legal guardianship are distinct technical considerations. Mere kinship by itself does not settle who bears each payment; the relevant conditions and legally assigned responsibility must be considered.

This is not the same legal structure as zakat on wealth, where ownership of growth-capable nisab is central. Here the cause is discussed in relation to persons and obligations of support.

22. The source of the ʿushr obligation

وسبب وجوب العشر الأراضي النامية حقيقة الريع
The source links ʿushr to land that yields actual agricultural produce.

The relevant analysis concerns productive land and its yield. ʿUshr does not share the identical legal cause with business-wealth zakat or sadaqat al-fitr; those obligations have separately defined structures.

This is why landownership alone, growth or yield, and the timing of the levy must be examined under the rules for agricultural produce rather than by automatically importing all the conditions of zakat on money.

23. Wudu: prayer or ritual impurity as the cause?

وسبب وجوب الوضوء الصلاة عند البعض
Some jurists regard the obligation of prayer as the cause of wudu.
وقال البعض: سبب وجوبه الحدث، ووجوب الصلاة شرط
Others treat ritual impurity as the cause and the obligatory prayer as a condition.

These accounts analyze different legal relationships. One emphasizes the need for ablution when an obligatory prayer requires purity. Another identifies the state of ritual impurity while retaining a connection to the requirement to perform prayer.

A person's loss of wudu does not necessarily mean that every passing moment creates a separate obligation to perform ablution immediately. The terms must be understood through the relevant act of worship.

24. Causes of obligatory ghusl

وسبب وجوب الغسل الحيض والنفاس والجنابة
The source lists menstruation, postnatal bleeding and major ritual impurity as causes relevant to obligatory ghusl.

Although both wudu and ghusl concern purification, they do not follow from precisely the same underlying circumstances. Ordinary minor ritual impurity is not, merely by being impurity, a cause of obligatory ghusl.

A person with minor impurity requires wudu for prayer; major impurity requires ghusl. Menstruation and postnatal bleeding carry their additional specific rules concerning cessation and purification.

25. Comparative summary of legal causes

DutyCause or relationAdditional considerationPrayerAppointed timeCapacity and the relevant time portionFastingPresence in RamadanSpecific excuses affecting performanceZakatQualifying growth-capable nisabLapse of a year where requiredHajjRelation to the Sacred HouseAbility and once-in-a-lifetime dutyʿUshrProductive land and yieldAgricultural levy rulesSadaqat al-fitrRelevant support and guardianshipIts distinct conditions

Identifying a cause does not settle all the legal requirements. One must still ask whether conditions are fulfilled, any bar is present, and when and how the act is performed. The next chapter turns to barriers to legal effect.