Diptote Causes — Additional Alif and Nūn and Their Conditions

1. Additional Alif and Nūn: The Noun Rule

أَمَّا الْأَلِفُ وَالنُّونُ الزَّائِدَتَانِ، إِنْ كَانَتَا فِي اسْمٍ، فَشَرْطُهُ أَنْ يَكُونَ عَلَمًا، كَـ«عِمْرَانَ» وَ«عُثْمَانَ».
Translation: As for an additional alif and nūn, if they occur in a noun, the condition for diptote status is that it be a proper name, like ʿImrān and ʿUthmān.

Here proper-name status combines with the additional alif and nūn.

2. A Common Noun: Saʿdān

فَـ«سَعْدَانٌ» اسْمُ نَبْتٍ مُنْصَرِفٌ؛ لِعَدَمِ الْعَلَمِيَّةِ.
Translation: Saʿdān is the name of a plant and is fully declinable because it lacks proper-name status.

Merely ending in -ān is not sufficient. Here the word denotes a kind of plant, not a particular person’s proper name.

3. Additional Alif and Nūn: The Adjective Rule

وَإِنْ كَانَتَا فِي صِفَةٍ، فَشَرْطُهُ أَنْ لَا يَكُونَ مُؤَنَّثُهُ عَلَى فَعْلَانَةَ، كَـ«سَكْرَانَ».
Translation: If the additional alif and nūn occur in an adjective, the condition is that its feminine not follow the pattern faʿlāna, as in sakrān.

For an adjective, the test is the feminine form, not proper-name status.

4. Nadmān: The Book’s First Ruling

فَـ«نَدْمَانٌ» مُنْصَرِفٌ؛ لِوُجُودِ «نَدْمَانَةَ».
Translation: Nadmān is fully declinable because its feminine form nadmāna exists.

This is the sense of nadmān meaning a companion (nadīm). The source’s marginal note gives a different ruling for another meaning.

5. Two Different Conditions

For a noun: additional alif and nūn + proper-name status; example: ʿImrān.
For an adjective: additional alif and nūn + absence of a feminine form on faʿlāna; example: sakrān.

These are separate tests. Do not treat ʿImrān as an adjective or sakrān as a proper name.

6. What “Additional” Means

Additional means that alif and nūn are added relative to the word’s underlying morphological form. Merely seeing the letters ـان at the end does not prove the condition.

Before identifying a cause of diptote status, establish the word’s category and form. This lesson uses the book’s verified examples.

7. Proper Name versus Common Noun

A proper name identifies a particular person or entity, such as ʿUthmān. A common noun names a type or class; the book uses saʿdān as the name of a plant species.

A common noun does not acquire proper-name status merely because its ending resembles that of a proper name.

8. ʿImrān: Nominative Parsing

جَاءَ عِمْرَانُ — ʿImrān came.

جَاءَ: past-tense verb, built on fatḥa; عِمْرَانُ: subject, nominative with visible ḍamma.

ʿImrān is a diptote: it takes nominative ḍamma but no tanwīn. This is a teaching example.

9. ʿImrān: Accusative Parsing

رَأَيْتُ عِمْرَانَ — I saw ʿImrān.

رَأَيْتُ: past verb with -tu as subject; عِمْرَانَ: direct object, accusative with visible fatḥa.

As a diptote, it does not receive accusative tanwīn.

10. ʿImrān: Genitive Parsing

مَرَرْتُ بِعِمْرَانَ — I passed by ʿImrān.

مَرَرْتُ: verb and subject; بِـ: preposition; عِمْرَانَ: genitive after bi-, marked by fatḥa because it is a diptote.

“Genitive” names the case; fatḥa is its visible sign here.

11. ʿImrān Across Three Cases

Nominative: جَاءَ عِمْرَانُ — subject, ḍamma.
Accusative: رَأَيْتُ عِمْرَانَ — object, fatḥa.
Genitive: مَرَرْتُ بِعِمْرَانَ — after preposition, fatḥa.

Remember: the genitive case does not make a diptote fully declinable; the sign used is simply different.

12. ʿUthmān: Another Proper Name

The book’s second proper name is ʿUthmān.

جَاءَ عُثْمَانُ — ʿUthmān came: nominative subject with ḍamma.
رَأَيْتُ عُثْمَانَ — I saw ʿUthmān: accusative object with fatḥa.
سَلَّمْتُ عَلَى عُثْمَانَ — I greeted ʿUthmān: genitive after ʿalā, marked by fatḥa.

13. Why Saʿdān Is Fully Declinable

سَعْدَانٌ denotes a plant species in the book. It lacks proper-name status and is therefore fully declinable.

Nom.: هَذَا سَعْدَانٌ — predicate, ḍamma with tanwīn.
Acc.: رَأَيْتُ سَعْدَانًا — object, fatḥa with tanwīn.
Gen.: نَظَرْتُ إِلَى سَعْدَانٍ — after ilā, kasra with tanwīn.

14. The Ending -ān Does Not Decide Everything

ʿImrān and saʿdān both end with alif and nūn, but the ruling differs.

ʿImrān: has proper-name status, so it is a diptote.
Saʿdān: in the book’s usage, has no proper-name status, so it is fully declinable.

Establish the word’s meaning and use before deciding its case endings.

15. Adjectives: Check the Feminine Form

For an adjective with an added alif and nūn, examine its feminine form.

If the feminine follows faʿlāna, this particular cause of diptote status does not apply. If it does not, the adjective may be a diptote as in the book’s example sakrān.

16. Sakrān and Its Feminine Sakrā

The feminine of سَكْرَانُ is سَكْرَى, not سَكْرَانَة. This is exactly the kind of contrast the author’s adjective condition addresses.

Thus sakrān is a diptote here: nominative ḍamma, accusative fatḥa, and ordinarily genitive fatḥa, without tanwīn.

17. Sakrān: Nominative Adjective

جَاءَ رَجُلٌ سَكْرَانُ — An intoxicated man came.

جَاءَ is a past verb; رَجُلٌ is the nominative subject; سَكْرَانُ is a nominative adjective (naʿt) marked by ḍamma.

Rajul has tanwīn because it is fully declinable; sakrān does not, although both are nominative.

18. Sakrān: Accusative Adjective

رَأَيْتُ رَجُلًا سَكْرَانَ — I saw an intoxicated man.

رَأَيْتُ is verb and subject; رَجُلًا is the accusative direct object; سَكْرَانَ is its accusative adjective with fatḥa.

Both are accusative, but only the fully declinable noun takes tanwīn.

19. Sakrān: Genitive Adjective

مَرَرْتُ بِرَجُلٍ سَكْرَانَ — I passed by an intoxicated man.

بِـ is a preposition; رَجُلٍ is genitive with kasra; سَكْرَانَ is a genitive adjective marked by fatḥa because it is a diptote.

The adjective and noun share the genitive case, even though their visible case signs differ.

20. Adjectives: Meaning and Form Together

Sakrān follows the faʿlān pattern and forms its feminine as sakrā. Rather than relying on surface shape alone, know the actually used feminine form.

Some other adjectives do have a feminine on faʿlāna; in those cases this particular cause of diptote status is absent.

21. Nadmān Meaning Companion

The book’s marginal note explains that when nadmān means nadīm, a companion, its feminine is nadmāna.

In this sense the word is fully declinable: نَدْمَانٌ، نَدْمَانًا، نَدْمَانٍ.

So an adjective’s visible pattern alone does not automatically establish diptote status.

22. Nadmān Meaning Regretful

The same marginal note gives another usage: if nadmān means nādim, “regretful,” its feminine, according to the book, is nadmā, not nadmāna.

In that sense nadmān is a diptote. The spelling is the same, but the meaning and feminine formation differ.

23. Compare the Two Meanings of Nadmān

Companion (nadīm): نَدْمَانٌ → feminine نَدْمَانَةٌ → fully declinable.
Regretful (nādim): نَدْمَانُ → feminine نَدْمَى → diptote.

This distinction comes from the book’s marginal note, not the next main-text sentence. Do not judge the word from its spelling alone.

24. Nadmān in the Genitive: Two Readings

Companion sense: مَرَرْتُ بِنَدْمَانٍ — genitive after bi-, kasra and tanwīn.
Regretful sense: مَرَرْتُ بِنَدْمَانَ — genitive after bi-, fatḥa and no tanwīn.

These are teaching examples; each must be understood with its specifically stated meaning.

25. A Side-by-Side Comparison

ʿImrān: proper name + additional alif-nūn = diptote.
Saʿdān: common plant noun; no proper-name status = fully declinable.
Sakrān: adjective with feminine sakrā = diptote.
Nadmān (companion): adjective with feminine nadmāna = fully declinable.

26. Mistake: Every Word Ending in -ān Is a Diptote?

Mistake: Every word ending in -ān is a diptote.

Correct method: First decide whether the word is a noun or an adjective. Then test proper-name status for nouns and the feminine pattern for adjectives.

Saʿdān and nadmān (companion sense) are the book’s counterexamples.

27. Mistake: Every Genitive Must Have Kasra?

Genitive describes the syntactic case produced by a governing element; its visible sign is not always kasra.

بِعِمْرَانَ: genitive, marked by fatḥa because it is a diptote.
بِسَعْدَانٍ: genitive, marked by kasra and tanwīn because it is fully declinable.

Distinguishing case from case marking is essential to correct parsing.

28. Additional Example: ʿAṭshān and ʿAṭshā

عَطْشَانُ (“thirsty”) has the feminine عَطْشَى, not ʿaṭshāna; it is likewise a diptote.

جَاءَ رَجُلٌ عَطْشَانُ — A thirsty man came.
مَرَرْتُ بِرَجُلٍ عَطْشَانَ — I passed by a thirsty man.

This is an additional teaching example, not a quotation from the source.

29. How to Work Out the Ruling

1. Identify whether the form is a noun or adjective.
2. Confirm the additional alif and nūn.
3. For a noun, check proper-name status.
4. For an adjective, find the feminine form.
5. Apply the appropriate nominative, accusative and genitive endings. Do not decide from the last letters alone.

30. Integrated Parsing Practice

رَأَيْتُ عُثْمَانَ: ʿUthmān is an accusative object with fatḥa.
نَظَرْتُ إِلَى سَعْدَانٍ: Saʿdān is genitive after ilā, with kasra and tanwīn.
مَرَرْتُ بِرَجُلٍ سَكْرَانَ: Rajul is genitive with kasra; sakrān is its genitive adjective marked by fatḥa.

Each sentence tests a different condition.

31. Summary: What the Source Actually Tests

For a noun, additional alif-nūn combines with proper-name status: ʿImrān and ʿUthmān.
For an adjective, inspect its feminine: sakrān → sakrā; nadmān (companion) → nadmāna.

The book’s marginal note adds that nadmān meaning regretful has feminine nadmā and is a diptote.