LessonsMeeting of Two Sākin Letters — ʿAlā Ḥaddih, Ghayr Ḥaddih and TanwīnQuiz

Ijtimāʿ al-sākinayn is the occurrence of two vowelless letters together in recitation. The question is whether they may remain together or must be adjusted in continuous reading.
The source distinguishes ʿalā ḥaddih from ʿalā ghayr ḥaddih. The decision depends on whether the first is a madd letter, whether both belong to one word, and whether you are joining or stopping.

Opening interactive controls...

Meeting of Two Sākin Letters — ʿAlā Ḥaddih, Ghayr Ḥaddih and Tanwīn

Book Three, Section One: categories, dropping or vowelizing in liaison, plural mīm, min, tanwīn and stopping Read the bilingual lesson for Meeting of Two Sākin Letters — ʿAlā Ḥaddih, Ghayr Ḥaddih and Tanwīn and test your understanding with a focused quiz.

Lesson

1. The meeting of two vowelless letters

Ijtimāʿ al-sākinayn is the occurrence of two vowelless letters together in recitation. The question is whether they may remain together or must be adjusted in continuous reading.
The source distinguishes ʿalā ḥaddih from ʿalā ghayr ḥaddih. The decision depends on whether the first is a madd letter, whether both belong to one word, and whether you are joining or stopping.

2. How the two categories are distinguished

For ʿalā ḥaddih, both conditions apply: the first sākin is a madd letter and both sākin letters occur within one word. The book permits this form.
ʿAlā ghayr ḥaddih applies when the first is not a madd letter or the two are not in one word. In connected recitation this is normally resolved by omission of the first madd sound or by giving an appropriate vowel.

3. First example: dābbah

In دَآبَّةٍ, the madd alif is followed by بّ. A shaddah entails a first, silent consonantal element followed by a vowelled element. Thus the madd letter meets that first sākin element within the same word.
This is the permitted category ʿalā ḥaddih. Do not erase the actual madd; the subsequent chapter treats the length required in such situations.

4. Second example: āl-āna

آلْآنَ is the other example given in the section. The initial madd element and the following sākin belong to one word, so this falls under ʿalā ḥaddih.
Recognition test: when both defining conditions hold, do not treat the meeting as the prohibited form. Permission for the meeting and the exact length of madd are distinct issues; the latter is discussed in the next section.

5. Different words and the forbidden meeting

Even when the first sākin is a madd letter, a following sākin in the next word means the two are not within one word: this is ghayr ḥaddih. Likewise, a non-madd first sākin makes it that category.
Do not assume that all meetings of two vowelless letters receive one identical treatment. First identify the kind of first letter and whether the meeting crosses a word boundary.

6. Why joining and stopping differ

Waṣl means reading through into the next word. The prohibited ghayr-ḥaddih meeting must then be resolved. Waqf means stopping at a word; the text explicitly recognizes permissibility of the meeting at a stop.
Therefore written vowelling alone does not decide the practical reading. First establish whether the words are being joined or whether a stop occurs.

7. When the first sākin is madd: omission

If the first sākin in a ghayr-ḥaddih meeting is a madd letter, the source says that its madd sound is dropped in connected recitation. This prevents the impermissible pairing.
Important: this describes pronunciation during liaison, not deleting letters from the written Qurʾān. A stop changes the phonetic situation and the same joining rule may no longer apply.

8. Example: wa-aqīmū ṣ-ṣalāh

In وَأَقِيمُوا الصَّلَاةَ, the final madd wāw of the first word would meet the following sākin after the hamzat al-waṣl is omitted in connected reading.
The madd sound is therefore dropped in liaison. If instead you stop on وَأَقِيمُوا, you are not performing that same junction. Listen for the difference between an isolated word and the joined phrase.

9. More source examples of omitted madd

The text cites لَا تَعْدِلُوا اعْدِلُوا, فِي الْأَرْضِ, تَحْتِهَا الْأَنْهَارُ, وَاسْتَبَقَا الْبَابَ, وَقَالَا الْحَمْدُ لِلَّهِ and ذَاقَا الشَّجَرَةَ.
For each, identify the preceding madd letter and the following sākin encountered in liaison. Practice the junction without preserving a separate prolonged madd sound where the source requires dropping it.

10. When the first sākin is not madd: vowelize

Where the first sākin is not a madd letter, the source resolves the meeting by giving it a vowel rather than omitting the consonant. Its general rule uses kasrah.
Example: إِنِ ارْتَبْتُمْ. The final nūn receives kasrah during liaison. This breaks the meeting of two sākin letters. The source then gives particular exceptions to the general kasrah pattern.

11. Example before ismu llāh

In مِمَّا لَمْ يُذْكَرِ اسْمُ اللَّهِ, a final non-madd rāʾ meets the start of اسْمُ when read continuously. The rāʾ is heard with kasrah: يُذْكَرِ اسْمُ.
The non-madd consonant remains present. Unlike a madd letter omitted at liaison, it is given the vowel needed for a pronounceable junction.

12. The special sequence biʾsa l-ismu l-fusūq

بِئْسَ الِاسْمُ الْفُسُوقُ (Sūrat al-Ḥujurāt) is treated as a special sequence. It involves the definite article’s lām and two relevant connecting hamzahs in the pronunciation of the following word.
The book states that the connecting hamzahs are omitted in liaison and the lām receives kasrah due to ijtimāʿ al-sākinayn. This is a specific junction rule, not an arbitrary new lexical vowel.

13. Plural mīm receives ḍammah

For the plural mīm, the book gives ḍammah rather than the general kasrah. Its examples are عَلَيْكُمُ الصِّيَامُ and عَلَيْهِمُ الْقِتَالُ.
At the junction, «مْ» is pronounced «مُ» to avoid the forbidden meeting. Practice: say «عَلَيْكُمْ» independently, then join it into «عَلَيْكُمُ الصِّيَامُ». Change the mīm only in the joining environment.

14. The special case of the preposition min

The source treats the preposition مِنْ as a special case: when the following word begins with a sākin in liaison, its nūn receives fatḥah, as in مِنَ اللَّهِ.
This is not the default kasrah rule for all non-madd consonants. The source also cites the connected reading of الٓمٓ اللَّهُ, where the ending mīm is read with fatḥah. Both are specific environments described by the text.

15. Tanwīn is an audible nūn, not a written nūn

Tanwīn is the double ḍammah, kasrah or fatḥah at a word ending. It produces the sound of a sākin nūn in pronunciation, although an independent nūn is not normally written.
The source gives قَدِيرٌ، بِرَسُولٍ، بَصِيرًا for the three double-vowel signs. The audible nūn has to be considered when joining words; its treatment at a stop differs.

16. Tanwīn followed by hamzat al-waṣl

When a word with tanwīn is followed by hamzat al-waṣl, that connecting hamzah is dropped during liaison. The audible sākin nūn of tanwīn then meets another sākin: the ghayr-ḥaddih situation.
For this junction the tanwīn nūn receives kasrah, even though no separate nūn is ordinarily written. The next examples let you identify this adjustment by ear.

17. Tanwīn example: bi-zīnatin il-kawākib

In بِزِينَةٍ الْكَوَاكِبِ, the kasratayn produce an audible sākin nūn. Once the following hamzat al-waṣl is dropped, that nūn encounters the following sākin.
The tanwīn nūn is therefore pronounced with kasrah in continuous reading. This is a phonetic junction rule, not a change to the written root of the first word.

18. Additional examples given by the source

The source also lists خَيْرًا الْوَصِيَّةُ, خَبِيثَةٍ اجْتُثَّتْ and طُوًى اذْهَبْ. All place tanwīn before a following hamzat al-waṣl.
Practice: identify the tanwīn sign, then the next word’s hamzat al-waṣl, then explain why the audible nūn of tanwīn takes kasrah during connected recitation.

19. Ordinary tanwīn at a stop

At an ordinary stop, the final audible nūn from tanwīn is not retained. With double ḍammah or double kasrah, the tanwīn sound is removed when stopping; the source illustrates with قَدِيرٌ and بِرَسُولٍ.
Avoid this error: do not sustain a final tanwīn nūn as though the recitation were still joining into the following word.

20. Stopping on tanwīn fatḥ: substitution by alif

For double fatḥah, the book gives a different ordinary stopping treatment: the tanwīn nūn is replaced by the sound of an alif. Thus بَصِيرًا at a stop ends with an extended fatḥah, like «بَصِيرَا».
Contrast the two modes: liaison has the audible tanwīn nūn; stopping uses the alif substitution in this form. Written form and specific exceptions still matter.

21. The exceptional written nūn of kaʾayyin

The marginal note singles out كَأَيِّنْ. Ordinary tanwīn does not usually display a separate nūn, but here the nūn is written in the muṣḥaf and stopping on it is established in the reading of Ḥafṣ.
Therefore the nūn is not deleted at a stop in this particular word. This exception does not authorize sounding a tanwīn nūn at ordinary stops elsewhere.

22. Why you do not begin with tanwīn

The source adds a short but important rule: do not begin or restart recitation from tanwīn. Tanwīn is not a separate word; it is an ending sign on the previous word, not a standalone opening sound.
Self-check: when starting midway through a sequence such as «بِزِينَةٍ الْكَوَاكِبِ», choose an actual word boundary. Do not attempt to begin with only the tanwīn sound.

23. A three-part decision routine

Use this order for two sākin letters. First: if both are in one word and the first is madd, it can be ʿalā ḥaddih. Second: for ghayr-ḥaddih with initial madd, drop the madd sound in liaison. Third: for an initial non-madd sākin, apply general kasrah or a stated special rule, such as ḍammah for plural mīm or fatḥah for «مِنْ».
For tanwīn also determine whether this is liaison or a stop and whether the next hamzah is a connecting hamzah.

24. Identify the rule from the sound

Four short checks: (1) Why are the two sākin elements in «دَآبَّةٍ» considered part of one word? (2) What is omitted when joining «وَأَقِيمُوا الصَّلَاةَ»? (3) Why does the plural mīm take ḍammah in «عَلَيْكُمُ الصِّيَامُ»? (4) Where does the tanwīn nūn acquire kasrah in «بِزِينَةٍ الْكَوَاكِبِ»?
Explain the reason, not just the name of the rule. Recite each first separately, then joined, listening for the change.

25. Summary before the madd chapter

ʿAlā ḥaddih: first a madd sākin and both sākin elements within a word; permitted. Ghayr ḥaddih: resolved in connected reading, normally by omitting a madd sound or vowelizing the preceding non-madd sākin, with stated exceptions.
Tanwīn produces an audible nūn in liaison, takes kasrah before a following hamzat al-waṣl, and changes at a stop. كَأَيِّنْ has its particular written-nūn rule. The next section turns to madd and its kinds.

Practice questions

Question 1

What is ijtimāʿ al-sākinayn?

  • Two sākin letters meeting
  • Two vowelled letters meeting
  • Only qalqalah
  • Always deleting madd

Question 2

How many main categories are given?

  • Four
  • Three
  • Two
  • One

Question 3

Which two conditions define ʿalā ḥaddih?

  • Both vowelled
  • First is madd and both in one word
  • Both in separate words
  • First always mīm

Question 4

Which category applies to dābbah?

  • Ghayr ḥaddih
  • Iqlāb
  • Iẓhār shafawī
  • ʿAlā ḥaddih

Question 5

Which is the other source example of ʿalā ḥaddih?

  • Āl-āna
  • In irtabtum
  • Min Allāh
  • Bi-rasūlin

Question 6

What does the source allow at a stop?

  • Ḍammah on every sākin
  • Omission of every madd
  • Meeting of sākin letters can be permitted
  • Always pronounce tanwīn nūn

Question 7

In ghayr ḥaddih with first sākin madd, what is done in liaison?

  • Give it ḍammah
  • Madd sound is omitted
  • Give it shaddah
  • Make it nūn

Question 8

Why is the madd sound dropped at wa-aqīmū ṣ-ṣalāh?

  • Lām is always omitted
  • Every ḍammah requires madd
  • It is not Qurʾānic
  • Two sākin elements meet in liaison

Question 9

Dropping the madd at liaison concerns?

  • Pronunciation at the junction
  • Erasing from the muṣḥaf
  • Translating the verse
  • Adding stop signs

Question 10

What is generally done when the first sākin is not madd?

  • Delete consonant
  • Make it madd lāzim
  • Give kasrah
  • Preserve both unmodified

Question 11

Why does nūn take kasrah in in irtabtum?

  • It is tanwīn
  • To resolve two sākin letters
  • It is plural mīm
  • It is a madd letter

Question 12

Which letter receives a joining vowel in yudhkar ismu llāh?

  • Mīm
  • Yāʾ
  • Sīn
  • Rāʾ

Question 13

Which letter receives kasrah due to the meeting in biʾsa l-ism?

  • Lām
  • Madd alif
  • Fāʾ
  • Wāw

Question 14

What vowel is assigned to plural mīm before the following sākin?

  • Fatḥah
  • Kasrah
  • Ḍammah
  • Tanwīn

Question 15

Which is a plural-mīm example?

  • Dābbah
  • ʿAlaykumu ṣ-ṣiyām
  • Baṣīran
  • Āl-āna

Question 16

In the source’s special min case, which vowel is used?

  • Ḍammah
  • Always unchanged sukūn
  • Tanwīn
  • Fatḥah

Question 17

Which letter is given fatḥah in connected alif-lām-mīm Allāh?

  • Final mīm
  • Sīn
  • First portion of lām
  • Tanwīn nūn

Question 18

What is the audible value of tanwīn?

  • Extra madd letter
  • Always shaddah
  • Sound of a sākin nūn
  • Hams sound

Question 19

How is ordinary tanwīn represented in writing?

  • Always with separate nūn
  • Double vowel marks, not separate nūn
  • Only alif
  • Always wāw

Question 20

When tanwīn is joined to a following hamzat al-waṣl?

  • Always delete nūn
  • Pronounce connecting hamzah fully
  • Geminate tanwīn
  • Tanwīn nūn takes kasrah

Question 21

What follows tanwīn in bi-zīnatin al-kawākib?

  • Hamzat al-waṣl
  • Independent hamzat al-qaṭʿ
  • Necessarily madd wāw
  • Mandatory stop

Question 22

Which rule is illustrated by khabīthatin ijtuththat?

  • Madd before shaddah
  • Plural mīm with ḍammah
  • Tanwīn followed by hamzat al-waṣl
  • Lām of Allāh

Question 23

What happens to ordinary tanwīn ḍamm/kasr at a stop?

  • Nūn is doubled
  • The tanwīn nūn is not sounded
  • Alif always sounded
  • Ghunnah is doubled

Question 24

At a normal stop on baṣīran, what replaces tanwīn fatḥ?

  • Mīm ghunnah
  • Ḍād idghām
  • Ḍammah
  • An alif sound

Question 25

What special stopping rule applies to kaʾayyin?

  • Written nūn remains at waqf
  • Always delete it
  • It always has madd lāzim
  • Waqf is prohibited

Question 26

What should not be generalized from kaʾayyin?

  • Considering muṣḥaf spelling
  • Following the reading of Ḥafṣ
  • Sounding the nūn at every normal tanwīn stop
  • Recognizing a specific exception

Question 27

What is the final instruction about tanwīn?

  • Tanwīn is always alif
  • Do not begin from tanwīn
  • Every tanwīn mandates a stop
  • Tanwīn only uses kasrah

Question 28

If first sākin is non-madd plural mīm, which vowel applies?

  • General kasrah
  • Always fatḥah
  • Always deletion
  • Specific ḍammah

Question 29

Which is the correct decision sequence?

  • Check madd vs non-madd, liaison vs stop, then exceptions
  • Judge by word length only
  • Retain both sākin everywhere
  • Erase tanwīn everywhere

Open the interactive quiz