Lam Shamsiya (Sun Letters) cause assimilation with the definite article “al,” blending the “l” sound with the following letter, while Lam Qamariya (Moon Letters) do not cause assimilation, keeping the “l” distinct. This distinction is crucial for correct pronunciation and Quranic recitation.
The roles of Lam Shamsiya and Lam Qamariya in Arabic grammar extend beyond mere phonetic distinctions, playing a vital role in enhancing the beauty and precision of the language. The careful application of these rules contributes to the rhythmic cadence and musicality inherent in Arabic pronunciation.
Lam Shamsiya (اللام الشمسية) and Lam Qamariya (اللام القمرية):
In Arabic linguistics, the concept of Sun and Moon letters plays a significant role in understanding the assimilation of sounds within the language.
This linguistic phenomenon categorizes Arabic letters into two groups: Sun Letters and Moon Letters (Lam Shamsiya and Lam Qamariya). The distinction becomes particularly relevant when these letters are followed by the definite article “al” (ال).
An understanding of Lam Shamsiya and Lam Qamariya (اللام الشمسية واللام القمرية) is crucial for learners of Arabic, aiding them in mastering the intricacies of proper pronunciation and grammatical structure within the language.

The Difference Between Sun And Moon Laam in Arabic:
The difference between Sun Letters and Moon Letters (حروف اللام الشمسية واللام القمرية) in Arabic grammar lies in their behavior when followed by the definite article “al” (ال).
Lam Shamsiya: Is always written but never pronounced, And the Letters that come after it are either stressed or unstressed. Lam Qamariya: Is written, and pronounced. Moon letters are always Sukoon and the letters that come after are ALWAYS stressed.
Here is a detailed comparison between both of them:
| Aspect | Lam Shamsiya (Sun Letters) | Lam Qamariya (Moon Letters) |
|---|---|---|
| Definition | When followed by “al” (ال), the “l” sound of “al” merges with the Sun Letter, creating a smooth pronunciation. | When followed by “al” (ال), the “l” sound of “al” remains distinct and is pronounced separately. |
| Pronunciation | The “l” in “al” is not pronounced but is replaced by the Sun Letter, which is typically stressed. | The “l” in “al” is pronounced clearly, and the Moon Letter is not stressed. |
| Assimilation | Assimilation occurs, where the “l” sound of “al” combines with the Sun Letter. | No assimilation occurs; the “l” sound remains distinct from the Moon Letter. |
| Example Words | – التين is pronounced “at-Tīn” (not “al-Tīn”). – السيف is pronounced “as-Sayf.” | – القمر is pronounced “al-Qamar.” – الباب is pronounced “al-Bāb.” |
| Letters Included | 14 Sun Letters: ت، ث، د، ذ، ر، ز، س، ش، ص، ض، ط، ظ، ن، ل | 14 Moon Letters: أ، ب، ج، ح، خ، ع، غ، ف، ق، ك، م، ه، و، ي |
| Effect on Tajweed | Ensures smooth and flowing recitation by merging sounds during Quranic recitation. | Promotes clarity in recitation by keeping the sounds distinct in Quranic recitation. |
| Learning Aids | Mnemonic: “طِبْ ثُمَّ صِلْ رَحِمًا تَفُزْ صِفْ ذَا نِعَمْ دَعْ سُــــوءَ ظَــنٍّ زُرْ شَـرِيفًا للكَــرَمْ” | Mnemonic: “حجا غبي فك مخه وقع” |
| Quranic Example | التين والزيتون: Pronounced “at-Tīn wa az-Zaytūn.” | في الكهف: Pronounced “fī al-Kahf.” |
| Teaching Tip for Kids | Use a Sun symbol to represent assimilation and stress on letters. | Use a Moon symbol to represent distinct pronunciation without stress. |
| Cultural Insight | Reflects the natural rhythm and flow of spoken Arabic. | Highlights clarity and separation in pronunciation, foundational for classical and modern Arabic. |
Let’s dive deeper for each:
What is Lam Shamsiya?
In Arabic grammar, Sun Letters (the letters of Lam Shamsiya) refer to certain letters that cause assimilation when followed by the definite article “al” (ال). The assimilation involves the “l” sound of “al” merging with the sound of the Sun Letter.
When one of these Sun Letters (اللام الشمسية) is followed by “al,” the “l” sound of “al” becomes part of the Sun Letter’s pronunciation, creating a smoother transition in spoken language. For example, the word “as-sayf” (السيف) becomes “as-sayfu” (السيفُ) when the Sun Letter “س” is followed by “al.”
These letters cause the “L” sound in “al” (ال) to merge with the following letter.
| Letter | Example Word (Arabic) | Pronunciation (with “ال”) | Example Translation |
|---|---|---|---|
| ت | التين | at-Tīn | The Fig |
| ث | الثوم | ath-Ṭūm | The Garlic |
| د | الدار | ad-Dār | The House |
| ذ | الذئب | al-Ẓiʾb | The Wolf |
| ر | الرجل | ar-Rajul | The Man |
| ز | الزهراء | az-Zahrāʾ | The Flower |
| س | السماء | as-Samāʾ | The Sky |
| ش | الشمس | ash-Shams | The Sun |
| ص | الصباح | aṣ-Ṣabāḥ | The Morning |
| ض | الضياء | aḍ-Ḍiyāʾ | The Light |
| ط | الطائر | aṭ-Ṭāʾir | The Bird |
| ظ | الظلام | aẓ-Ẓalām | The Darkness |
| ن | النهر | an-Nahr | The River |
| ل | الله | allāh | God |
What is Lam Qamariya?
In Arabic grammar, Moon Letters (Lam Qamariya) refer to certain letters that do not cause assimilation when followed by the definite article “al” (ال). The pronunciation of the “l” sound in “al” remains distinct from the initial sound of the Moon Letter. The Moon Letters in Arabic are:
When one of these Moon Letters (اللام القمرية) is followed by “al,” the “l” sound of “al” does not merge with the initial sound of the Moon Letter, and both sounds are pronounced separately. For example, the word “al-bayt” (البيت) remains “al-bayt” (البيت) when the Moon Letter “ب” is followed by “al.” Understanding Moon Letters is important for proper pronunciation and grammatical structure in Arabic.
These letters do not cause assimilation, and the “L” sound in “al” (ال) remains separate from the following letter.
| Letter | Example Word (Arabic) | Pronunciation (with “ال”) | Example Translation |
|---|---|---|---|
| أ | الباب | al-Bāb | The Door |
| ب | البيت | al-Bayt | The House |
| ج | الجمل | al-Jamal | The Camel |
| ح | الحجر | al-Ḥajar | The Stone |
| خ | الخبز | al-Khubz | The Bread |
| ع | العلم | al-ʿIlm | The Knowledge |
| غ | الغرفة | al-Ghurfah | The Room |
| ف | الفصل | al-Faṣl | The Class |
| ق | القمر | al-Qamar | The Moon |
| ك | الكتاب | al-Kitāb | The Book |
| م | المسجد | al-Masjid | The Mosque |
| ه | الهاتف | al-Hātif | The Phone |
| و | الوالد | al-Wālid | The Father |
| ي | اليمن | al-Yaman | The Yemen |

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Letters of Lam Shamsiya And Lam Qamariya:
The Arabic word “Shams” becomes Al-Shams when the lam is added, and the word is pronounced “Ashmas”, meaning that the lam is silent, While the word “Qamar” becomes “Al-Qamar” and is also pronounced “Al Qamar” when the lam is added, meaning that the lam is pronounced and its on Sukoon.
The conditions of Lam Shamsiya and Lam Qamariya (اللام الشمسية واللام القمرية) change according to the letter that follows the ال.
The sun letters (Huruf Shamsiya) are represented in the first letter of every word in the poetry lines that follow, which were compiled by one of the poets.
“طِبْ ثُمَّ صِلْ رَحِمًا تَفُزْ صِفْ ذَا نِعَمْ دَعْ سُــــوءَ ظَــنٍّ زُرْ شَـرِيفًا للكَــرَمْ”
And they’re:
[ت / ث / د / ذ / ر / ز / س / ش / ص / ض / ط / ظ / ن / ل]
While moon letters (Hurof Qamariya) were combined together in the following sentence to make it easy to learn
“حجا غبي فك مخه وقع”
And the letters are:
[أ / ب / ج / ح / خ / ع / غ / ف / ق / ك / م / ه / و / ي ]
Examples of Lam Shamsiya And Lam Qamariya from Quran
There are many examples of Lam Shamsiya and Lam Qamariya in the Quran. While learning the Quran, the learner finds themselves practicing the Sun and Moon letters intensely, which is one reason why Shaykhi Academy’s Quran Hifz classes are a rich source of knowledge and practice of this rule.
1- {وَالتِّينِ وَالزَّيْتُونِ}:
Here, Lam shamsiya was added to the word تين and turned it to التِّينِ, and it gets pronounced as at-Tin. And so is the word زيتون which became الزَّيْتُونِ, which gets pronounced Az-Zaitun.
2- {فَضَرَبْنَا عَلَىٰ آذَانِهِمْ فِي الْكَهْفِ سِنِينَ عَدَدً}:
Here, Lam Qamariya was added to the word كهف and, it turned into الكهف, to be pronounced as Al-Kahf, and not Ak-Kahf.
3- { فَسَبِّحْ بِحَمْدِ رَبِّكَ وَكُنْ مِنَ السَّاجِدِينَ ﴿98﴾ وَاعْبُدْ رَبَّكَ حتى يَأْتِيَكَ الْيَقِينُ }:
Here, Lam Shamsiya was added to the word ساجدين and turned it into الساجدين, which makes its pronunciation As-Sajedin. On the other hand, the word يقين turns to اليقين when the Lam Qamariya is added; so that, it is pronounced Al-Yaqeen.
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How to Teach Kids Lam Shamsiya And Lam Qamariya? (A Story)
This is the most well-known story used to teach children the difference between lam shamsiya and lam qamariya:-
The story is basically about a family known as the family of the definite article/Al Al-taaref (ال التعريف) who was blessed with identical twins. And because of their magical beauty, the parents named the first son Al-Shams and the other son Al-Qamar.
Al-Shams and Al-Qamar grew up and the father bought them games, which were the 28 letters of the Arabic alphabet. Suddenly, these games caused a fight between the two kids, and the father realized that he should divide those games between the kids.
He gave Al-shams 14 letters which are {ت، ث، د، ذ، ر، ز، س، ش، ص، ض، ط، ظ، ن، ل}. And gave Al-qamar the rest 14 letters {أ، ب، ج، ح، خ، ع، غ، ف، ق، ك، م، هـ، و، ي}. However, each brother imposed conditions on his letters; Al-qamar required that his letters produce the sound of the Lam, while Al-shams required that the sound of the Lam becomes silent with the letter that follows stressed. The two brothers’ debate was thus resolved, and they lived in peace, love, and happiness.

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Shaykhi Academy’s Fusha Arabic classes offer students a comprehensive and unique approach to mastering the Arabic language, providing a solid foundation in both classical and modern Arabic.
With a focus on teaching the intricacies of pronunciation, including the rules of Lam Shamsiya and Lam Qamariya, this Quran stands out for its commitment to linguistic precision.
Don’t waste any time, and start your journey today!
The rules of Lam Shamsiya and Lam Qamariya serve as an integral aspect of the linguistic tapestry that contributes to the enduring allure of the Arabic language, fostering an appreciation for its inherent beauty and depth.

Conclusion:
The distinction between Lam Shamsiya (Sun Letters) and Lam Qamariya (Moon Letters) is an essential concept in Arabic linguistics, aiding learners in mastering pronunciation and grammar.
When the definite article “al” (ال) precedes Sun Letters, assimilation occurs—the “l” sound merges with the Sun Letter, as seen in as-sayfu (السيفُ). Conversely, with Moon Letters, the “l” remains distinct, such as in al-bayt (البيت).
These rules are fundamental for Quranic recitation, promoting fluency and clarity in the Arabic language while enriching learners’ understanding of its phonetic beauty.
















































