Noun Case Class 9 — Sound Masculine Plural with My

1. The Ninth Noun-Inflection Class

التَّاسِعُ: أَنْ يَكُونَ الرَّفْعُ بِتَقْدِيرِ الْوَاوِ، وَالنَّصْبُ وَالْجَرُّ بِالْيَاءِ لَفْظًا.
Translation: In the ninth class, nominative is marked by an estimated wāw, whereas accusative and genitive have a yāʾ as their expressed marker.

Here the estimated wāw is the nominative sign of the sound masculine plural that no longer remains visible in its original form. Do not confuse it with an estimated ḍamma in earlier classes.

2. Which Nouns Follow This Rule?

وَيَخْتَصُّ بِجَمْعِ الْمُذَكَّرِ السَّالِمِ مُضَافًا إِلَى يَاءِ الْمُتَكَلِّمِ.
Translation: This rule is restricted to a sound masculine plural placed in an iḍāfa construction with the first-person possessive yāʾ.

Both conditions apply: a sound masculine plural and a following first-person possessive pronoun as muḍāf ilayh. The ordinary مُسْلِمُونَ / مُسْلِمِينَ pattern was studied earlier.

3. The Book’s Example and Its Underlying Form

تَقُولُ: «جَاءَنِي مُسْلِمِيَّ»؛ تَقْدِيرُهُ: «مُسْلِمُوْيَ».
Translation: You say, “My Muslim men came to me.” Its reconstructed form is “مُسْلِمُوْيَ” (an explanatory form, not a spoken alternative).

مُسْلِمِيَّ is the pronounced form. مُسْلِمُوْيَ is the underlying form given in the textbook to explain the sound change; it is not a normal alternative sentence to recite.

Source: Hidayat-un-Nahw, printed p. 22. Vowel marks have been added for instruction.

4. All Three Sentences from the Book

«جَاءَنِي مُسْلِمِيَّ»، «رَأَيْتُ مُسْلِمِيَّ»، «مَرَرْتُ بِمُسْلِمِيَّ».
Translation: My Muslims came to me; I saw my Muslims; I passed by my Muslims.

مُسْلِمِيَّ is the subject in the first sentence, the direct object in the second, and a genitive noun in the third. Its written/pronounced form is the same, but its syntactic role differs. Each original example is parsed in full below.

5. First Contrast with the Ordinary Sound Plural

An ordinary sound masculine plural is مُسْلِمُونَ in the nominative and مُسْلِمِينَ in the accusative/genitive.

In an iḍāfa, its final plural nūn is dropped: e.g. مُسْلِمُو الْبَلَدِ and مُسْلِمِي الْبَلَدِ.

The present textbook rule concerns the special case of addition to the first-person yāʾ, where an additional sound change occurs.

6. Adding the First-Person Yāʾ

مُسْلِمُو originally had wāw as its nominative marker. Adding the first-person possessive yāʾ brings a wāw and yāʾ together in the same word.

The book describes the underlying form as «مُسْلِمُوْيَ». Here we explain why that form changes, rather than memorizing an opaque spelling.

Key point: the original nominative marker matters even after its separate form disappears.

7. The Book’s Rule: Wāw Meets Yāʾ

اجْتَمَعَتِ الْوَاوُ وَالْيَاءُ فِي كَلِمَةٍ وَاحِدَةٍ، وَالْأُولَى مِنْهُمَا سَاكِنَةٌ.
Translation: Wāw and yāʾ came together in one word, and the first of them was sākin (without a vowel).

Here the first letter is wāw and the second is yāʾ. The book specifies not only their adjacency but also that the first is sākin as part of its explanation.

8. Changing Wāw into Yāʾ

فَقُلِبَتِ الْوَاوُ يَاءً.
Translation: The wāw was then changed into a yāʾ.

This is qalb, substitution of one letter for another. The original plural inflection does not cease to exist merely because its sound changes.

Distinction: a letter’s phonetic form is not identical with the case sign it represents historically.

9. Assimilation of the Two Yāʾs

وَأُدْغِمَتِ الْيَاءُ فِي الْيَاءِ.
Translation: Then one yāʾ was assimilated into the other yāʾ.

Idghām merges two like letters into a doubled consonant. The shadda on the yāʾ in مُسْلِمِيَّ represents this assimilation.

This is not assimilation of the plural nūn; that nūn had already been removed by iḍāfa.

10. Why Does the Vowel Change to Kasra?

وَأُبْدِلَتِ الضَّمَّةُ بِالْكَسْرَةِ؛ لِمُنَاسَبَةِ الْيَاءِ، فَصَارَ: «مُسْلِمِيَّ».
Translation: The ḍamma was replaced by a kasra to suit the yāʾ, resulting in “muslimiyya.”

The kasra here is a phonetic adjustment, not proof that a nominative subject has turned into a genitive noun. In the first example it remains a nominative subject.

11. All the Steps in One Place

1. Ordinary nominative sound masculine plural: مُسْلِمُونَ.
2. The plural nūn is removed for iḍāfa.
3. A possessive yāʾ meets the wāw; the book identifies the underlying form as مُسْلِمُوْيَ.
4. Wāw → yāʾ, followed by assimilation and ḍamma → kasra, gives مُسْلِمِيَّ.

This is an instructional sequence based on the textbook rule, not another direct quotation.

12. First Book Example: Parsing the Verb

جَاءَنِي مُسْلِمِيَّ
Translation: My Muslims came to me.

جَاءَ: past verb built on fatḥa; نِ: protective nūn, with no syntactic case position; ي: attached first-person object pronoun in an accusative position.

Notice: the yāʾ in جَاءَنِي attaches to the verb and functions as an object; the yāʾ in the following noun has a different role.

13. First Book Example: Parsing the Subject

جَاءَنِي مُسْلِمِيَّ
Translation: My Muslims came to me.

مُسْلِمِيَّ: nominative subject with estimated wāw as the sign of nominative; the wāw changed and was assimilated to yāʾ. The plural is muḍāf, while its final first-person yāʾ is an attached, indeclinable pronoun in the genitive position as muḍāf ilayh.

Complete structure: verb + protective nūn + object pronoun; then subject plus its possessive complement.

14. Second Book Example: Full Parsing

رَأَيْتُ مُسْلِمِيَّ
Translation: I saw my Muslims.

رَأَيْتُ: past verb built on sukūn on attachment to the subject tāʾ; تُ: attached subject pronoun in the nominative position.

مُسْلِمِيَّ: accusative direct object whose sign is the yāʾ present in assimilated form; the plural is muḍāf and the final first-person pronoun is muḍāf ilayh in a genitive syntactic position.

15. Third Book Example: Full Parsing

مَرَرْتُ بِمُسْلِمِيَّ
Translation: I passed by my Muslims.

مَرَرْتُ: past verb built on sukūn; تُ: attached subject pronoun.

بِـ: preposition built on kasra, without its own case position. مُسْلِمِيَّ: genitive noun governed by bāʾ with yāʾ as its sign. It is also muḍāf with the first-person pronoun as muḍāf ilayh. The prepositional phrase is linked to «مَرَرْتُ».

16. One Written Form, Three Cases

جَاءَنِي مُسْلِمِيَّ — nominative subject with estimated wāw.
رَأَيْتُ مُسْلِمِيَّ — accusative object marked by yāʾ.
مَرَرْتُ بِمُسْلِمِيَّ — genitive after bāʾ marked by yāʾ.

Principle: do not determine the case from the final sound alone. Identify the governing element and syntactic role first.

17. Two Different First-Person Pronouns

The last yāʾ of جَاءَنِي is a direct object pronoun attached to the verb: “me.”

The final first-person yāʾ in مُسْلِمِيَّ is a possessive complement (muḍāf ilayh): “my Muslims.”

Difference: the first pronoun has an accusative syntactic position; the second has a genitive syntactic position.

18. Do Not Confuse Nūn, Protective Nūn and Shadda

The ending plural nūn of مُسْلِمُونَ disappears in iḍāfa.

The «نِ» of جَاءَنِي is the protective nūn attached to the verb, a different element.

The shadda in مُسْلِمِيَّ reflects assimilation of two yāʾs, not assimilation of nūn.

Three distinct concepts: deleting plural nūn, protective nūn, and yāʾ assimilation.

19. Estimated Wāw, Not Estimated Ḍamma

الْقَاضِي has an estimated ḍamma in the nominative: it is a manqūṣ noun from the preceding lesson.

مُسْلِمِيَّ instead has an estimated wāw as its nominative sign because it is historically a sound masculine plural.

Do not confuse them: both may lack a separately visible original marker, but their grammatical case signs differ.

20. Do Not Mistake Muslimiyya for a Singular

مُسْلِمِيَّ may look shorter than a regular plural, but it remains a sound masculine plural changed by iḍāfa and assimilation.

Do not automatically read this form as a singular or infer genitive merely from kasra. Determine its case from the full sentence.

Test: in «جَاءَنِي مُسْلِمِيَّ», the plural is a nominative subject.

21. An Additional Example: Nominative Subject

حَضَرَ مُعَلِّمِيَّ
Translation: My teachers attended.

حَضَرَ: past verb built on fatḥa. مُعَلِّمِيَّ: nominative subject with an estimated wāw; the plural is muḍāf with the final first-person pronoun as muḍāf ilayh.

This is an additional instructional example, not a quotation from the book.

22. Additional Examples: Accusative and Genitive

كَرَّمْتُ مُعَلِّمِيَّ
Translation: I honoured my teachers.
كَرَّمْتُ: past verb with attached subject tāʾ; مُعَلِّمِيَّ: accusative object marked by yāʾ; it is muḍāf, followed by the possessive pronoun.

سَلَّمْتُ عَلَى مُعَلِّمِيَّ
Translation: I greeted my teachers.
سَلَّمْتُ: past verb and its subject; عَلَى: preposition; مُعَلِّمِيَّ: genitive marked by yāʾ, with possessive yāʾ as muḍāf ilayh.

Both sentences are additional teaching examples.

23. Review: Three Diagnostic Questions

1. Which nouns? A sound masculine plural in iḍāfa to first-person yāʾ.

2. Which case markers? Estimated wāw in the nominative; yāʾ in the accusative and genitive.

3. Why does the form change? Loss of the plural nūn in iḍāfa; then the textbook’s explanation of wāw substitution, yāʾ assimilation, and ḍamma-to-kasra adjustment.

Try parsing all three original book examples aloud before starting the quiz.