What are the basic Pillars of Islamic Aqeedah Arkan e Imaan

Six Articles of Islamic Aqeedah (Creed)
There are six believes of Islamic Aqeedah, called as six article of faith (called arkān al-īmān) and these are

Six Articles of Islamic Aqeedah
1.   Belief in Allah, the one and only one worthy of all worship (Oneness of the Worship), creator, sustainer etc and all powerful for everything (Oneness of the Lordship) with all his good name and attributes.                                       (Tawhid)
2.   Belief in His angels                            (Malāika)
3.   Belief in His Divine Books sent on Prophets from time to time.                                                                                              (Kutub)
4.   Belief in His Messengers, which were sent to Mankind from time to time.                                          (Rusul)
5.   Belief in the Day of Judgment and in the Resurrection (life after death).                                                   (Yawm al-qiyāmah)
6.   Belief  in Destiny (Fate)                         (Qadar).

(Some books have separated life after death and Day of Judgment as separate number and it makes total number to seven)

These six articles of belief has been described in clear words in Quranic Ayats and has also been sum up in the Hadith of Jibraeel that is in Bukhari and Muslim shareef both.
Allah says in Surah Nisa
يَا أَيُّهَا الَّذِينَ آمَنُوا آمِنُوا بِاللَّهِ وَرَسُولِهِ وَالْكِتَابِ الَّذِي نَزَّلَ عَلَى رَسُولِهِ وَالْكِتَابِ الَّذِي أَنزَلَ مِنْ قَبْلُ وَمَنْ يَكْفُرْ بِاللَّهِ وَمَلاَئِكَتِهِ وَكُتُبِهِ وَرُسُلِهِ وَالْيَوْمِ الآخِرِ فَقَدْ ضَلَّ ضَلاَلاً بَعِيدًا (النساء: 136
O you who believe, do believe in Allah and His Messenger and in the Book He has revealed to His Messenger and in the Books He has revealed earlier. Whoever disbelieves in Allah and His angels and His Books and His Messengers and the Last Day has indeed gone far astray.

لَيْسَ الْبِرَّ أَنْ تُوَلُّوا وُجُوهَكُمْ قِبَلَ الْمَشْرِقِ وَالْمَغْرِبِ وَلَكِنَّ الْبِرَّ مَنْ آمَنَ بِاللَّهِ وَالْيَوْمِ الآخِرِ وَالْمَلاَئِكَةِ وَالْكِتَابِ وَالنَّبِيِّينَ    البقرة: 177

Hadith of Jibraeel

Sahih Bukhari Volume 1, Book 2, Number 48

حدثنا مسدد،‏‏‏‏ قال حدثنا إسماعيل بن إبراهيم،‏‏‏‏ أخبرنا أبو حيان التيمي،‏‏‏‏ عن أبي زرعة،‏‏‏‏ عن أبي هريرة،‏‏‏‏ قال كان النبي صلى الله عليه وسلم بارزا يوما للناس،‏‏‏‏ فأتاه جبريل فقال ما الإيمان قال ‏"‏ الإيمان أن تؤمن بالله وملائكته وبلقائه ورسله،‏‏‏‏ وتؤمن بالبعث ‏"‏‏.‏ قال ما الإسلام قال ‏"‏ الإسلام أن تعبد الله ولا تشرك به،‏‏‏‏ وتقيم الصلاة،‏‏‏‏ وتؤدي الزكاة المفروضة،‏‏‏‏ وتصوم رمضان ‏"‏‏.‏ قال ما الإحسان قال ‏"‏ أن تعبد الله كأنك تراه،‏‏‏‏ فإن لم تكن تراه فإنه يراك ‏"‏‏.‏ قال متى الساعة قال ‏"‏ ما المسئول عنها بأعلم من السائل،‏‏‏‏ وسأخبرك عن أشراطها إذا ولدت الأمة ربها،‏‏‏‏ وإذا تطاول رعاة الإبل البهم في البنيان،‏‏‏‏ في خمس لا يعلمهن إلا الله ‏"‏‏.‏ ثم تلا النبي صلى الله عليه وسلم ‏ {‏ إن الله عنده علم الساعة‏}‏ الآية‏.‏ ثم أدبر فقال ‏"‏ ردوه ‏"‏‏.‏ فلم يروا شيئا‏.‏ فقال ‏"‏ هذا جبريل جاء يعلم الناس دينهم ‏"‏‏.‏ قال أبو عبد الله جعل ذلك كله من الإيمان‏.


Narrated Abu Huraira Raziallahu Anhu:One day while the Prophet was sitting in the company of some people, (The angel) Gabriel came and asked,
"What is Emaan (Faith,Aqeedah)?"
Allah's Apostle replied, 'Faith is to believe in Allah, His angels, (the) meeting with Him, His Apostles, and to believe in Resurrection." Then he further asked,
"What is Islam?"
Allah's Apostle replied, "To worship Allah Alone and none else, to offer prayers perfectly to pay the compulsory charity (Zakat) and to observe fasts during the month of Ramadan." Then he further asked,
"What is Ihsan (perfection)?"
Allah's Apostle replied, "To worship Allah as if you see Him, and if you cannot achieve this state of devotion then you must consider that He is looking at you." Then he further asked,
"When will the Hour be established?"
Allah's Apostle replied, "The answerer has no better knowledge than the questioner. But I will inform you about its portents.
1. When a slave (lady) gives birth to her master.
2. When the shepherds of black camels start boasting and competing with others in the construction of higher buildings. And the Hour is one of five things which nobody knows except Allah.
The Prophet then recited: "Verily, with Allah (Alone) is the knowledge of the Hour--." (31. 34) Then that man (Gabriel) left and the Prophet asked his companions to call him back, but they could not see him. Then the Prophet said, "That was Gabriel who came to teach the people their religion." Abu 'Abdullah said: He (the Prophet) considered all that as a part of faith.

Detail of these Six Articles of Aqeedah are present in different verses  of quran and Hadith.
For example for explanation of tawheed there are verses like …. 
رَبُّ السَّمَاوَاتِ وَالأَرْضِ وَمَا بَيْنَهُمَا فَاعْبُدْهُ وَاصْطَبِرْ لِعِبَادَتِهِ هَلْ تَعْلَمُ لَهُ سَمِيًّا (مريم: 65

اللَّهُ لاَ إِلَهَ إِلاَّ هُوَ الْحَيُّ الْقَيُّومُ لاَ تَأْخُذُهُ سِنَةٌ وَلاَ نَوْمٌ لَهُ مَا فِي السَّمَاوَاتِ وَمَا فِي الأَرْضِ مَنْ ذَا الَّذِي يَشْفَعُ عِنْدَهُ إِلاَّ بِإِذْنِهِ يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ وَلاَ يُحِيطُونَ بِشَيْءٍ مِنْ عِلْمِهِ إِلاَّ بِمَا شَاءَ وَسِعَ كُرْسِيُّهُ السَّمَاوَاتِ وَالأَرْضَ وَلاَ يَئُودُهُ حِفْظُهُمَا وَهُوَ الْعَلِيُّ الْعَظِيمُ (البقرة: 255

هُوَ اللَّهُ الَّذِي لاَ إِلَهَ إِلاَّ هُوَ عَالِمُ الْغَيْبِ وَالشَّهَادَةِ هُوَ الرَّحْمَنُ الرَّحِيمُ (الحشر:
هُوَ اللَّهُ الَّذِي لاَ إِلَهَ إِلاَّ هُوَ الْمَلِكُ الْقُدُّوسُ السَّلاَمُ الْمُؤْمِنُ الْمُهَيْمِنُ الْعَزِيزُ الْجَبَّارُ الْمُتَكَبِّرُ سُبْحَانَ اللَّهِ عَمَّا يُشْرِكُونَ (الحشر: 23).
هُوَ اللَّهُ الْخَالِقُ الْبَارِئُ الْمُصَوِّرُ لَهُ الأَسْمَاءُ الْحُسْنَى يُسَبِّحُ لَهُ مَا فِي السَّمَاوَاتِ وَالأَرْضِ وَهُوَ الْعَزِيزُ الْحَكِيمُ (الحشر: 24).

For easy understanding of Muslims these has been  by codified and has been put together by Salafus Salehin Scholars of Sunnah in the form of Book. 

The Kalima

What is Kalima? What is its relation with Islamic Aqeedah?

1. The Kalimah (Arabic  کلمہ, means "word") the literal meaning is word. Kalima Tayyaba means good word. In the Kalima, the basic of Islamic Aqeedah from Quran and Sunnah has been summarised and codified in Arabic by Scholars of Sunnah.
2. This is for easy understanding. These kalimas were compiled and put together for people to memorize and learn the fundamentals of Islam.
3. These are recorded in various books of knowledge and are recited (and memorized) by Muslim across the globe. In Islamic world parents make it memorize to their children at very small age. In some part of the Muslim world it is very popular and students in the early childhood remember it, Specially in Maktabs (in India ,Pakistan Bangladesh) it is in their syllabus, so that a muslim child become sound in Faith from beginning. 
4. These Six Kalimas are from Quran and Hadith but not present together at one place in any particular verse of Quran or Hadith, Rather they are present as part of different verse of The Holy Quran and authentic Ahadith. And these have been accepted by the salafus salehin Scholar of Islam.

Some of the Sources of these Kalima from Quran Hadith has been referenced here.
These have been compiled from various Verses of The Holy Quran and Sahih Hadith.  
فَاعْلَمْ أَنَّهُ لاَ إِلَهَ إِلاَّ اللَّهُ وَاسْتَغْفِرْ لِذَنْبِكَ وَلِلْمُؤْمِنِينَ وَالْمُؤْمِنَاتِ وَاللَّهُ يَعْلَمُ مُتَقَلَّبَكُمْ وَمَثْوَاكُمْ (محمد: 19 
مُحَمَّدٌ رَسُولُ اللَّهِ وَالَّذِينَ مَعَهُ أَشِدَّاءُ عَلَى الْكُفَّارِ رُحَمَاءُ بَيْنَهُمْ (الفتح: 29
وَلَوْلاَ إِذْ دَخَلْتَ جَنَّتَكَ قُلْتَ مَا شَاءَ اللَّهُ لاَ قُوَّةَ إِلاَّ بِاللَّهِ إِنْ تَرَنِ أَنَا أَقَلَّ الكهف: 39).
فلما علا عليها رجل نادى فرفع صوته لا إله إلا الله والله أكبر‏

Question: 11034
Assalam-o-alaikum, Respected Sir, We learn and recite six Kalimas(Tayyab, Shahadat, Tamjeed, Tauheed, Astaghfar, Raddi-kuffr) right from our childhood. All the mosques and Ulamas recommend these 6 Kalimas. I want to know the origin of these 6 Kalimas? Are these found in Qur'an or Hadith and where are they mentioned. Please tell me the reference. Jazak ALLAH
  Answer: 11034
  Feb 28,2009
(Fatwa: 344/236=L/1430)

These six kalimahs are proved from hadith:
Kalimah Tayyibah:
لما خلق اللہ جنۃ عدن وھی أول ما خلق اللہ، قال لھا: تکلمي، قالت: لا إلہ إلا اللہ محمد رسول اللہ (کنز العمال 1:43)
Kalimah Shahadah:
أشھد ان لا إلہ إلا اللہ وأشھد أن محمداً عبدہ ورسولہ (البخاری 1:115)
Kalimah Tamjeed:
سبحان اللہ، والحمد للہ، ولا إلہ إلا اللہ واللہ اکبر، وفي روایۃ ولا حول ولا قوۃ إلا باللہ العلي العظیم (مسلم 2:345)
Kalimah Tauheed:
من دخل السوق فقال: لا إلہ إلا اللہ وحدہ لا شریک لہ، لہ الملک ولہ والحمد، یحیي ویمیت وھو علی کل شئ قدیر (ترمذي 2:181)
While Kalimah Istighfar is mentioned in Bukhari 2:933, and 
Kalimah Radd-e-Kufr is mentioned in Musnad Imam Ahmad 5:451.
Allah (Subhana Wa Ta'ala) knows Best
Darul Ifta,
Darul Uloom Deoband
[Note:  On internet I came across some discussion questioning the authenticity of six Kalima and some ignorant Muslims even claiming it to be bidah (Nauzubillah). Please don’t get into these bad mannered people who are with little knowledge and much misinformation]

5. The Six Kalimas are
1.Kalimah Tay-Yibah (The Good Word)
2.Kalimah Shahadah (The word of Testimony.)
3. Kalima Tamjeed (The Word of Glorification of Allah)
4.Kalimah Tawheed (The word of Oneness of Allah)
5.Kalimah Istighfar (The word Ishtagfarmeans Forgiveness, Penitence)
6.Kalima Rud-E-Kufr (The word Rud-e-Kuf rmeans Rejecting the Disbelief)

The Tawheed and greatness of Allah is strongly reflected in these Kalimah. The Kalimahs is to facilitate the easy memorizing and learning of Aqeedah (beliefs). If one read it with sincerity knowing its translation it gives a strong feeling of faith and increase iman on Allah.

The six statements are very much educational and helpful for a Muslim to understand Faith.
1.   The first two are basically declaration of faith, as a Muslim,
2.   The next two describes the Tawheed of Allah and his greatness and are very popular words of remembrance (Azkar) of Allah
3.   The next two glorify Allah his greatness, Nullify Shirk and also are very nice supplications for God's forgiveness. All or parts of these statements can be found in the Qur'an or the Hadith.

Listed below are the Six Kalmas its Arabic words Transliteration and Translation.

1.Kalimah Tay-Yibah (The Good Word) OrKalimah Tawheed (The Creed Of The Oneness Of Allah). 

لآ اِلَهَ اِلّا اللّهُ مُحَمَّدٌ رَسُوُل اللّهِ

(Trans: There is no God but Allah, Muhammad is the Messenger of Allah)
This KALIMAH TAY-YIBAH (the good word) orKALIMAH TAWHEED (the creed of the Oneness of Allah) is the basic creed of Islam. If someone reads the basic creed with heart. He/she becomes Muslim. This includes all other Kalima, and all explanation are inherently included in it.

2.Kalimah Shahadah (The word of Testimony.)

أَشْهَدُ أنْ لا إلَٰهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيْكَ لَهُ وَأشْهَدُ أنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ
 (I bear testimony that none is worthy of worship but Allah, and I testify that Muhammad is the servant and Messenger of Allah.)
3. Kalima Tamjeed (The Word of Glorification of Allah)
سُبْحَان اللهِ وَا
لْحَمْدُلِلّهِ وَلا إِلهَ إِلّااللّهُ وَاللّهُ أكْبَرُ وَلا حَوْلَ وَلاَ قُوَّةَ إِلَّا بِاللّهِ الْعَلِيِّ الْعَظِيْم 
Subhan Allahu, wal Hamdu lillahi, wa la illaha ilAllahu, wallahu Akbar. wa La hawla wa la quwwata illa billah-al 'alii-al 'adheem 
English Translation: 
Glory be to Allah and Praise to Allah, and there is no God But Allah, and Allah is the Greatest. And there is no Might or Power except with Allah.
4.Kalimah Tawheed (The word of Oneness of Allah)
لا إلہ إلا اللہ وحدہ لا شریک لہ، لہ الملک ولہ والحمد، یحیي ویمیت وھو علی کل شئ قدیر 

La ilaha illAllahu Wahdahu La Shareeka lahu, lahulmulk, wa lahulhamd, yuhyee wa yumeet, wa huwa hayy la yumoot abadan abada Dhul Jalaali waal Ikram beyadihi alkhayr, wa huwa 'ala kulli Shay'in Qadeer
English Translation: 
(There is) none worthy of worship except Allah. He is only One. (There is) no partners for Him. For Him (is) the Kingdom. And for Him (is) the Praise. He gives life and causes death. And He (is) Alive. He will not die, never, ever. Possessor of Majesty and Reverence. In His hand (is) the goodness. And He (is) the goodness. And He (is) on everything powerful.)
5.Kalimah Istighfar (The word Ishtagfarmeans Forgiveness, Penitence)
astaghfiru-llāha rabbī min kulli dhanbin adhnabtuhu amadan aw khaā an sirran  wa alāniyyatan wa atūbu ilayhi min adh-dhanbi-lladhī a lamu wa min adh-dhanbi-lladhī lā a lamu innaka anta allāmu-l-ghuyūbi wa sattāru l-uyūbi wa ghaffāru dh-dhunūbi wa lāawla wa lā quwwata illā bi-llāhi-l-alīyyi-l-aīm.
English Translation:
I seek forgiveness from Allah, my Lord, from every sin I committed knowingly or unknowingly, secretly or openly, and I turn towards Him from the sin that I know and from the sin that I do not know. Certainly You, You (are) the knower of the hidden things and the Concealer (of) the mistakes and the Forgiver (of) the sins. And (there is) no power and no strength except from Allah, the Most High, the Most Great.
6.Kalima Rud-E-Kufr (The word Rud-e-Kufrmeans Rejecting the Disbelief)
Allaahumma inniy a’oodhu bika min an ushrika bika shay-an wa ana a’alamu bihi wa astaghfiruka lima laa a’alamu bih. Tubtu anhu wa tabarratu minal kufri wash-shirki wal kizbi wal ma’aasi kullihaa aslamtu wa aamantu wa aqoolu laa ilaaha illallaahu Muhammadur rasoolullah 
English Translation:
O Allah! Certainly I seek protection with You from, that I associate partner with You anything and I know it. And I seek forgiveness from You for that I do not know it. I repended from it and I made myself free from disbelief and polytheism and the falsehood and the back-biting and the innovation and the tell-tales and the bad deeds and the blame and the disobedience, all of them. And I submit and I say (there is) none worthy of worship except Allah, Muhammad is the Messenger of Allah.

Aamantu… (I Believe………)
Scholars of Islam has given a short formula of creed which summarises the articles of faith, called the Āmantu (“I believe”). 
IMAN-E-MUJMAL (The Summary Declaration of Faith)
IMAN-E-MUFASSIL (The Detailed Declaration of Faith)
Iman Mujmal (Iman in brief)
(I affirm my faith in Allah as He is with all His Names and Attributes and I accept all of His Commands.)

Iman Mufassal (Iman in detail)?



I affirm my faith in Allah, His angels, His Books, His Messengers, the day of judgment, in that the fate good and bad is predetermined by Allah and in coming to life after death (resurrection).