Impurity in Stagnant and Running Water, Large Ponds, and Aquatic Creatures

1. Three Distinct Situations for Water and Impurity

Before assessing impurity in water, first identify its condition: stagnant, flowing, or an extensive pond whose far end does not move when the other end is disturbed.

These cases do not carry the same ruling. Stagnant water raises the concern of impurity spreading; flowing water is assessed by the persistence of impurity and its effects; an extensive pond is considered in light of the separation of its two ends.

The death of certain creatures in water is a further distinct topic, involving whether the creature has flowing blood or normally lives in water.

2. Impurity Falling into Stagnant Water

وَكُلُّ مَاءٍ دَائِمٍ إِذَا وَقَعَتْ فِيهِ نَجَاسَةٌ لَمْ يَجُزِ الْوُضُوءُ بِهِ، قَلِيلًا كَانَ أَوْ كَثِيرًا؛ لِأَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَمَرَ بِحِفْظِ الْمَاءِ مِنَ النَّجَاسَةِ، فَقَالَ:
Meaning: If impurity falls into stagnant water, wudu from it is not permissible, whether its quantity is small or large, for the Prophet ﷺ instructed that water be protected from impurity, saying:

Ma' da'im means water that stands still rather than flows. The passage gives a general prohibition where impurity enters stagnant water.

The subsequent rule of a very large pond provides a specific qualification; the wording “small or large” should be read together with that later distinction.

3. Hadith Concerning Stagnant Water

«لَا يَبُولَنَّ أَحَدُكُمْ فِي الْمَاءِ الدَّائِمِ، وَلَا يَغْتَسِلْ فِيهِ مِنَ الْجَنَابَةِ».
Meaning: None of you should urinate in stagnant water, nor bathe in it for major ritual impurity.

The expression “stagnant water” refers to water that does not flow. The cited wording supports protecting such water from contamination.

The separate rule of a very extensive pond later in the passage hinges on size and separation, not on denying the general prohibition.

4. Washing the Hands Before Immersing Them

وَقَالَ عَلَيْهِ السَّلَامُ: «إِذَا اسْتَيْقَظَ أَحَدُكُمْ مِنْ مَنَامِهِ فَلَا يَغْمِسَنَّ يَدَهُ فِي الْإِنَاءِ حَتَّى يَغْسِلَهَا ثَلَاثًا؛ فَإِنَّهُ لَا يَدْرِي أَيْنَ بَاتَتْ يَدُهُ».
Meaning: When one of you wakes from sleep, let him not put his hand into the vessel until he has washed it three times, for he does not know where his hand spent the night.

The hadith provides an example of safeguarding water where contamination is possible but not certain.

It does not assert that every sleeping person’s hand is necessarily impure; it directs precaution before immersing the hand in stored water.

5. Ordinary Stagnant Water and the Large-Pond Exception

The general stagnant-water ruling does not make visible clarity alone sufficient after impurity has fallen into the water.

The exception is a sufficiently extensive pond where impurity occurs at one end and its reaching the distant end is not apparent. This exception rests on a recognised measure of the pond’s extent, not simply its name.

6. Quantity and Location of Impurity

The amount of impurity and the quantity of water are separate questions. In ordinary stagnant water, a very small amount of impurity does not automatically become irrelevant.

For an extensive pond, the location of impurity and its reach toward the distant side matter. The judgment therefore depends on whether water is stagnant, how extensive it is, and where the impurity fell.

7. The Rule for Running Water

وَأَمَّا الْمَاءُ الْجَارِي إِذَا وَقَعَتْ فِيهِ نَجَاسَةٌ جَازَ الْوُضُوءُ مِنْهُ إِذَا لَمْ يُرَ لَهَا أَثَرٌ؛ لِأَنَّهَا لَا تَسْتَقِرُّ مَعَ جَرَيَانِ الْمَاءِ.
Meaning: As for running water, if impurity falls into it, wudu from it is permissible when no effect of that impurity appears, for impurity does not remain settled while the water flows.

Flowing water is distinguished by movement and the identifiable effect of impurity. Where no relevant effect remains, the ruling differs from stagnant water.

If impurity leaves an observable effect at the point of use, the stated permission does not extend to that affected water.

8. What Counts as an Observable Effect?

The effect of impurity in flowing water is identified through changes attributable to it in colour, taste or smell.

A contaminant’s falling into flowing water and a lasting effect upon the water are different conditions. Water whose characteristics remain affected by impurity is not treated as unaffected running water.

9. Why Flow Matters

لِأَنَّهَا لَا تَسْتَقِرُّ مَعَ جَرَيَانِ الْمَاءِ
Meaning: Because impurity does not remain settled as the water flows.

Flow is a reason that contamination need not remain fixed at one point. Nevertheless, actual flowing water can still be affected by impurity.

Therefore, absence of a relevant effect remains a separate condition.

10. Running Water with a Changed Colour or Smell

Suppose impurity enters a channel and visibly alters the odour at one point. That portion is affected and cannot be treated as unaffected running water.

A different flowing section with no remaining relevant effect is assessed separately under the running-water rule.

Flow and persistence of the impurity’s effect are distinct factors, both of which matter.

11. Using Water at the Actual Point of Contamination

Iraqi Hanafi jurists treated the precise point at which impurity entered running water as affected whether the impurity was visible or invisible.

Some Hanafi jurists of Khurasan and Balkh distinguished visible from invisible impurity: where no visible impurity or residual effect exists, they allowed use even at the point of entry.

The latter view was preferred in some Hanafi references. The dispute concerns the legal significance of the contaminant’s presence and identifiable effect at the point of entry.

12. Visible and Invisible Impurity

Visible impurity is material whose presence can be seen; invisible impurity is not identifiable as a distinct visible object after entering water.

Invisible does not mean automatically harmless. Jurists consider whether impurity remains, what effect it produces and from which point the water is taken.

Those questions account for different interpretations within Hanafi fiqh regarding the point of entry in running water.

13. The Very Large Pond

وَالْغَدِيرُ الْعَظِيمُ الَّذِي لَا يَتَحَرَّكُ أَحَدُ طَرَفَيْهِ بِتَحْرِيكِ الطَّرَفِ الْآخَرِ إِذَا وَقَعَتْ فِي أَحَدِ جَانِبَيْهِ نَجَاسَةٌ جَازَ الْوُضُوءُ مِنَ الْجَانِبِ الْآخَرِ؛ لِأَنَّ الظَّاهِرَ أَنَّ النَّجَاسَةَ لَا تَصِلُ إِلَيْهِ.
Meaning: In a very large pond whose one end does not move when the other end is stirred, if impurity falls on one side, wudu is permissible from the other, because apparently the impurity does not reach it.

A very large pond is stagnant water whose two ends are far enough apart for the rule to distinguish them.

The basis is the apparent non-arrival of impurity at the distant side, rather than a claim that contamination at one edge has no significance anywhere in the pond.

14. The Movement Test for the Pond

The statement that motion at one end does not move the opposite end supplies a juristic criterion for the extent of a pond.

It is a method of distinguishing a small body of water from a sufficiently large one.

Jurists differed about the action used to test the movement: stirring by hand, washing for wudu, or bathing for ghusl.

15. Abu Hanifa: Movement Caused by Bathing

One criterion reported from Abu Hanifa assesses the movement produced by bathing, without deliberately creating exaggerated force.

The explanation given is that bathing in a pond was a more pressing practical need than wudu, which could commonly be performed at home.

The test is a way of estimating the pond’s extent, not an independent ritual requirement.

16. Abu Yusuf: Movement Made by the Hand

Abu Yusuf is reported to have used movement produced by the hand as the criterion.

The reason is that stirring by hand is a minimal action for detecting whether movement travels across the water.

This disagreement concerns how to measure the extent of the pond, not whether impurity itself is legally significant.

17. Muhammad: Movement Produced by Wudu

Muhammad is reported to have measured movement caused by performing wudu; some Hanafi references prefer his criterion.

The rationale is that assessing the quantity of water arises frequently in matters of wudu, so the movement caused by ordinary wudu provides a relevant practical test.

All three approaches consider whether impurity is likely to reach the opposite side, while differing on how the movement test should be conducted.

18. The Ten-by-Ten Cubit Criterion

Some Hanafi authorities expressed the large-pond condition as a surface-area measure: about ten cubits in length and ten in width, using the specified cubit standard.

This is a juristic measurement intended to express sufficient distance between sides. The pond must also have enough depth that ordinary drawing of water does not expose the bed.

The movement and area tests are different methods for addressing the same question of sufficient separation.

19. The Contaminated Side of a Large Pond

The allowance concerns drawing water from the opposite side of an extensive pond; it does not declare the actual contaminated spot permissible in every condition.

If impurity or its effect is present at the point of use, that point is assessed accordingly. The distant side is distinguished because impurity is not apparently reaching it.

The place where contamination entered and the place where water is drawn are different legal considerations.

20. If Impurity Enters Near the Middle of a Pond

The source case places impurity at one side and permits use of the opposite side. If impurity enters near the centre, that argument cannot automatically be applied identically to every point.

The reach and effect of impurity must be assessed in relation to the particular place where water is taken, considering the extent and movement of the water.

21. Comparing Stagnant, Flowing and Extensive Water

Ordinary stagnant water is generally disqualified when impurity falls into it, and visible clarity alone does not resolve the issue.

Flowing water may be used if no relevant trace of impurity remains; an affected portion is not covered by that permission.

In an extensive pond, impurity at one edge does not necessarily determine the ruling of the far side, given the recognised separation.

22. Creatures Without Flowing Blood

وَمَوْتُ مَا لَيْسَ لَهُ نَفْسٌ سَائِلَةٌ فِي الْمَاءِ لَا يُفْسِدُ الْمَاءَ، كَالْبَقِّ وَالذُّبَابِ وَالزَّنَابِيرِ وَالْعَقَارِبِ.
Meaning: The death in water of creatures without flowing blood does not spoil the water, such as bedbugs, flies, wasps and scorpions.

Nafs sa'ilah means blood that flows out; it does not refer here to the creature’s life or soul.

The absence of flowing blood is the stated basis for the rule that these creatures’ death in water does not by itself invalidate the water.

23. Nafs Sa’ilah: Linguistic and Juristic Meaning

In this juristic expression, nafs sa'ilah refers to flowing blood, not the creature’s possession of life.

The classification of a dead creature in water therefore looks beyond death alone, considering the presence of flowing blood and whether the creature normally lives in water.

24. Why Bedbugs, Flies, Wasps and Scorpions?

The named creatures illustrate the rule about animals lacking flowing blood: their mere death in water does not spoil it on that basis.

This concerns the water’s purity. It does not establish that every such creature is edible or harmless; those are separate legal and practical questions.

25. Why the Presence of Flowing Blood Matters

The Hanafi rationale is that creatures lacking flowing blood do not produce the same blood-related impurity associated with the death of larger land animals.

Their rule is therefore not simply analogised to every other death in water.

A separate source of impurity in the water must still be assessed under its own rules.

26. Shafi’i Disagreement on Dead Creatures

Hanafi law does not treat the mere death of a creature without flowing blood in water as spoiling it. A differing ruling is reported from Shafi‘i concerning some non-fish creatures.

The disagreement asks whether impurity caused by death extends uniformly across species or whether categories are excluded based on blood characteristics and unavoidable circumstances.

Specific exceptions must be considered, so the different creatures should not all be collapsed into one broad rule.

27. Creatures That Normally Live in Water

وَمَوْتُ مَا يَعِيشُ فِي الْمَاءِ إِذَا مَاتَ فِي الْمَاءِ لَا يُفْسِدُ الْمَاءَ، كَالسَّمَكِ وَالضَّفْدَعِ وَالسَّرَطَانِ.
Meaning: If an animal that lives in water dies in water, it does not spoil the water, such as fish, frogs and crabs.

Animals that normally live in water form a separate juristic category. Under the Hanafi rule cited here, their death in water does not by itself spoil that water.

Fish, frogs and crabs are examples; the ruling differs from simply applying the case of a land animal falling into water.

28. The Common Feature of Fish, Frogs and Crabs

Fish, frogs and crabs are different animals, but their ordinary life in water is the common feature relevant to the cited rule.

Whether a creature’s death spoils water is a different legal question from whether its flesh may be eaten. The first does not decide the second.

29. Juristic Disagreement Regarding Aquatic Animals

Fish dying in water has a recognised exception. Hanafi jurists also treat the death of frogs and crabs in water as not spoiling it, whereas a different position concerning some non-fish aquatic animals is reported from Shafi‘i.

The divergence concerns the scope of impurity arising from an animal’s death and the exceptions among aquatic species. Consensus should not be claimed for all aquatic creatures merely from the fish case.

30. Two Distinct Grounds for Exemption

Two independent classifications appear here:

1. Creatures without flowing blood, exemplified by flies and scorpions.

2. Creatures that normally live in water, exemplified by fish, frogs and crabs.

The first turns on the nature of blood; the second turns on the creature’s natural aquatic habitat. They should not be treated as identical categories.

31. Case Analysis: A Fly Dies in Stored Water

If a fly falls into clean water in a small container and dies, with no separate impurity present, the Hanafi rule for creatures without flowing blood applies.

The water is not spoiled on account of that death alone. The ruling arises from the kind of creature, not from the large quantity of water.

32. Case Analysis: Impurity at One Edge of a Large Pond

If impurity falls at the eastern side of a sufficiently extensive pond while ordinary movement does not reach the western side, the stated large-pond exception may apply at the opposite side.

The basis is the apparent failure of impurity to reach there; an observed effect at that far side would call for a separate assessment.

33. Case Analysis: A Stream After the Effect Disappears

Impurity entered a flowing channel, but farther downstream no relevant change in smell, colour or taste remains. At the unaffected flowing section, the cited permission can apply.

This does not erase the distinction from the earlier point where the contaminant itself may remain; the point of drawing water and its remaining effects matter.

34. Integrated Summary of the Primary Rulings

Stagnant water is generally disqualified when impurity enters, with the specifically defined distant-side exception for extensive ponds.

Running water may be used when no legally relevant effect remains; water at an affected point is not treated as unaffected.

Creatures lacking flowing blood and creatures that live in water are separate exceptions concerning death in water, with recognised juristic disagreements about their scope.

35. Key Terms in This Discussion

Ma’ da’im/ma’ rakid: stagnant water.

Ma’ jari: flowing water.

Ghadir ‘azim: an extensive pond whose opposite edges are sufficiently separated.

Athar al-najasah: a legally relevant effect of impurity upon the water.

Nafs sa’ilah: flowing blood, not the creature’s soul or life.

36. Five Consecutive Rulings and Their Scope

1. Stagnant water is affected by impurity, with a specific distant-side exception for very extensive ponds.

2. Flowing water is suitable when the impurity has left no relevant effect.

3. Impurity at one edge of an extensive pond does not necessarily reach the other.

4. The death in water of a creature without flowing blood does not itself spoil the water.

5. Death in water of a creature that normally lives there is a distinct exception.