Ilm LibraryIlm Library
  • Books
  • Quran
  • Duas
  • Lectures
  • Khutbas
  • Why Islam
  • Islamic Guides
  • Wisdom
  • Donate
  • About
  • Books
  • Quran
  • Duas
  • Lectures
  • Khutbas
  • Why Islam
  • Islamic Guides
  • Wisdom
  • Donate
  • About
Ilm LibraryIlm Library

Access Islamic Knowledge and Resources rooted in the Qur'an and Sunnah, interpreted through the understanding of the Salaf.

Library

  • Books
  • Quran
  • Duas
  • Lectures
  • Khutbas

Learn

  • Why Islam
  • Islamic Guides
  • Wisdom
  • Donate
  • About

Get in Touch

Have questions or suggestions? Reach out to us.

Contact Us

If this site benefits you, please make a dua for us and share it with someone.

© 2026 Ilm Library. All rights reserved.

Beginner's Guide to Aqeedah

The creed of Ahlus-Sunnah, step by step

HomeIslamic GuidesAqeedah

What is Aqeedah?

Aqeedah (العقيدة) is what a Muslim firmly believes about Allah, His angels, books, messengers, the Last Day, and divine decree. It is the foundation every other science of Islam rests on. Get the foundation right and everything else becomes easier. This guide walks you through the core concepts and then a three-step learning path with the best books and lectures at each level.

“And your God is one God. There is no deity worthy of worship except Him, the Most Gracious, the Most Merciful.”

Surah Al-Baqarah 2:163

“Say: He is Allah, the One. Allah, the Eternal Refuge. He neither begets nor is born, nor is there to Him any equivalent.”

Surah Al-Ikhlaas 112:1-4

“Whoever dies knowing that there is no true deity worthy of worship except Allah will enter Paradise.”

Sahih Muslim 26

The Three Categories of Tawheed

Tawheed is the oneness of Allah. The scholars of Ahlus-Sunnah classify it into three categories, each with its own evidence and implications.

Ar-Rubūbiyyah

الربوبية

Oneness of Lordship

Allah alone creates, provides, and controls everything.

Believing that only Allah made everything, gives life, takes life away, provides for all creatures, and runs the whole universe. Nothing happens without His will. Even the idol-worshippers of Makkah agreed with this much, but agreeing to it alone was not enough to make them Muslims.

“Indeed, your Lord is Allah, who created the heavens and the earth in six days. (7:54)”

Al-Ulūhiyyah

الألوهية

Oneness of Worship

Worship goes to Allah alone, not to anyone or anything else.

Every kind of worship, prayer, duʿāʾ (asking), fasting, sacrifice, love, fear, hope, reliance, goes only to Allah. Not to prophets, not to saints, not to graves, not to angels. This is the main message every prophet came with, and this is where most conflict between prophets and their people happened.

“We sent to every nation a messenger saying: Worship Allah and avoid false gods. (16:36)”

Al-Asmāʾ wa aṣ-Ṣifāt

الأسماء والصفات

Oneness of Names and Attributes

Believe in Allah's names and attributes the way He described Himself.

Allah has names (like The Most Merciful, The All-Hearing, The All-Seeing) and attributes He described for Himself in the Qur'an and through His Prophet ﷺ. We believe in all of them exactly as they were revealed, without changing their meaning, denying them, asking 'how', or comparing Him to His creation.

“There is nothing like unto Him, and He is the All-Hearing, the All-Seeing. (42:11)”

The Opposites of Tawheed: Types of Shirk

Shirk (associating partners with Allah) is the only sin Allah has said He will not forgive if died upon. Scholars classify it into three levels by severity.

Shirk Akbar

Takes a person out of Islam

Major Shirk

Directing any act of worship to someone other than Allah. Examples: praying to a grave or a saint, sacrificing an animal to other than Allah, or believing anyone shares His lordship. If someone dies on this without repenting, Allah has said in the Qur'an that He will not forgive it.

Shirk Asghar

Does not take out of Islam, but serious

Minor Shirk

Smaller forms that are still very dangerous. Examples: riyāʾ (showing off in worship so people praise you), swearing by other than Allah, or saying 'what Allah willed and what you willed' instead of 'what Allah willed, then what you willed'. Does not remove someone from Islam, but must be avoided.

Shirk Khafī

Often grouped under minor

Hidden Shirk

The inner, hidden forms of minor shirk, like secretly doing a deed to impress people or seeking anyone's pleasure before Allah's. The Prophet ﷺ warned it is hidden like a black ant on a black stone in the dark. Many scholars classify this as a type of Shirk Asghar.

The Six Pillars of Iman

From the Hadith of Jibreel, when the angel Jibreel asked the Prophet ﷺ what iman is.

1

Belief in Allah

That He exists, He alone is the Lord, He alone deserves worship, and He has the names and attributes He told us about in the Qur'an and through His Prophet ﷺ.

2

Belief in the Angels

Allah created angels from light. They never disobey Him and they carry out His commands. Examples: Jibreel, who brought revelation; Mikaeel, over rain; Israfeel, who will blow the horn.

3

Belief in the Books

Allah sent books to His messengers: the Scrolls of Ibrahim, the Tawrah (to Musa), the Zabūr (to Dawud), the Injeel (to Isa), and the Qur'an (to Muhammad ﷺ). The Qur'an is the final, unchanged revelation.

4

Belief in the Messengers

Every prophet Allah sent was a true messenger, starting with Adam and ending with Muhammad ﷺ, who is the seal of the prophets. No new prophet will come after him.

5

Belief in the Last Day

Death, the questioning in the grave, resurrection, the gathering, the judgement, Paradise, and Hell. Everything about what happens after this life.

6

Belief in Qadar (Divine Decree)

Everything that happens, the things we enjoy and the things we dislike, happens by Allah's knowledge and will. He wrote it, He willed it, He created it, and nothing is outside His knowledge.

Why the Salaf taught creed first

Every prophet began with tawheed before law. Every act of worship is only accepted when it rests on correct aqeedah. Learning fiqh without aqeedah is like building a house without a foundation: impressive for a moment, but it will not stand.

Three-Step Learning Path

A curated progression of books and lecture series, used by students of knowledge worldwide.

1

Step 1 of 3

Beginner

Beginner

If you are just starting out, begin here. These short texts give you the essential beliefs every Muslim needs to know, in plain language.

Time needed

2 to 4 months at a steady pace

Before starting

No prior knowledge needed. Arabic is helpful but not required.

After this step

You will have a solid base and be ready to study longer classics like Kitab at-Tawheed.

What you'll learn

  • •Who you are, what your religion is, and who your Prophet is (the three fundamental principles)
  • •What tawheed really means and the three categories
  • •What invalidates a person's Islam (the ten nullifiers)
  • •Four basic principles that help you spot shirk in its modern forms

Recommended Books

Tawheed: Its Meaning & Categories

An introduction to Tawheed and Aqeedah by Shaykh Al-'Uthaymeen.

Usool Al Thalatha

An essential text outlining the three fundamental principles every Muslim should know.

Qawaid Al Arba'a

A concise work discussing four important principles concerning the understanding of monotheism.

Nawaqid Al Islam

A book addressing the nullifiers of Islam and clarifying what can invalidate one's faith.

Lecture Series

Introduction Series to AqeedahExplanation of Thalaathatul Al-UsoolExplanation of Al-Qawa'aid al-Arba'ahExplanation of Ten Nullifiers of Islam
2

Step 2 of 3

Intermediate

Intermediate

Once the basics feel comfortable, these books go deeper into tawheed and the doubts people raise against it. This is the stage where things really click.

Time needed

6 to 12 months

Before starting

Finish the beginner step first. You should be comfortable with the three categories of tawheed and the nullifiers of Islam.

After this step

You will be able to defend tawheed and spot creedal mistakes, ready to study the classical texts of Ahlus-Sunnah.

What you'll learn

  • •Deep study of tawheed and every act of worship that belongs only to Allah
  • •How to answer common doubts raised against tawheed
  • •The six foundational principles that the Prophet ﷺ built the community on
  • •The difference between clear and hidden forms of shirk

Recommended Books

Kitab at-Tauhid

The Book of Monotheism by Shaykh Muhammad ibn Abdul-Wahhab, a classic study of Tawheed.

Sharh Kashf al Shubahat

A clarification and removal of doubts surrounding Tawheed and its opposites.

Usool As Sittah

The six fundamental principles that every believer should understand.

Lecture Series

Explanation of Kitab at-TauhidExplanation of Kashf al ShubahatExplanation of Usool As Sittah
3

Step 3 of 3

Advanced

Advanced

These are the classical creedal works studied by students of knowledge. They reward careful reading and ideally study with a teacher.

Time needed

1 to 2 years, done slowly with reflection

Before starting

Complete the intermediate step. You should recognize different kinds of shirk and have a working knowledge of tawheed terminology.

After this step

You will have studied the core texts of the Salafī tradition and be equipped to teach others and answer tough questions.

What you'll learn

  • •Ibn Taymiyyah's full creed of Ahlus-Sunnah and Ibn Uthaymeen's line-by-line explanation
  • •Imam al-Barbahari's statement of Sunni creed and his warnings against innovation
  • •The pre-Islamic practices the Qur'an came to correct
  • •How to engage with creedal debates historically and today

Recommended Books

Sharh Al-Aqidah Al-Wasitiyyah Vol. 1

Ibn Uthaymeen's explanation of Ibn Taymiyyah's classic creed, part one.

Sharh Al-Aqidah Al-Wasitiyyah Vol. 2

Ibn Uthaymeen's explanation of Ibn Taymiyyah's classic creed, part two.

Aspects of the Days of Ignorance (Masa'il al-Jahiliyyah)

A study of pre-Islamic practices that Islam came to correct.

Sharh As-Sunnah Vol. 1

Imam al-Barbahari's creed of Ahlus-Sunnah, explained in depth, part one.

Sharh As-Sunnah Vol. 2

Imam al-Barbahari's creed of Ahlus-Sunnah, explained in depth, part two.

Lecture Series

Explanation of al-Aqidah al-WaasitiyyahExplanation of Sharh as Sunnah

Famous Scholars of Aqeedah

The scholars whose works still define the study of creed in Ahlus-Sunnah.

Shaykh al-Islam Ibn Taymiyyah

661-728 AH

Shaykh al-Islam

Among the most influential scholars in Islamic history. His aqeedah works, including Al-Aqidah Al-Wasitiyyah, defended the creed of the Salaf against innovations.

Ibn al-Qayyim al-Jawziyyah

691-751 AH

Senior student of Ibn Taymiyyah

Author of Madarij as-Salikin and many works that clarified tawheed, the soul, and the reality of worship. His writing is celebrated for clarity and spiritual depth.

Muhammad ibn Abdul-Wahhab

1115-1206 AH

Reviver of tawheed

Author of Kitab at-Tawheed. Led a movement in the Arabian Peninsula to return to the pure creed of the Salaf after centuries of creedal confusion.

Shaykh Ibn Baz

1330-1420 AH

Modern Grand Mufti

Grand Mufti of Saudi Arabia. Known for his humility, vast knowledge, and gentle manner. Taught and authored extensively on aqeedah.

Shaykh Ibn Uthaymeen

1347-1421 AH

Prolific teacher

One of the most beloved modern scholars. His explanations of Al-Wasitiyyah, Thalaathat al-Usool, and Kitab at-Tawheed are classics in English translation.

Shaykh al-Albani

1332-1420 AH

Hadith master

Revived the science of hadith authentication in the modern era. His aqeedah positions are rooted firmly in authentic narrations.

Common Questions

Why start with aqeedah before other sciences?+

Aqeedah is what you believe about Allah, His prophets, and the unseen. Fiqh tells you how to worship; aqeedah tells you whom you are worshipping and why. A shaky foundation makes every other act of worship unstable, so the Salaf always taught aqeedah first.

What's the difference between aqeedah and fiqh?+

Aqeedah is creed: what you believe. Fiqh is jurisprudence: how you act. Both are essential, but they answer different questions. Aqeedah is about the unseen and the heart; fiqh is about the seen and the limbs.

Do I need Arabic to study aqeedah?+

No. Many foundational texts (Thalaathat al-Usool, Kitab at-Tawheed, Al-Wasitiyyah) are well-translated into English with scholarly commentary. Arabic deepens your study but is not a barrier to getting started.

What if I encounter doubts about my faith?+

Doubts are normal and even the Companions experienced them. Study Kashf ash-Shubuhaat (Removal of Doubts), talk to a qualified scholar, make dua, and do not let doubts sit unaddressed. Most are resolved by clear knowledge from reliable sources.

Who are Ahlus-Sunnah wal-Jamaa'ah?+

The people who follow the Sunnah of the Prophet ﷺ and stay united on the creed of the Companions. It is distinguished from sects that deviated in creed or methodology. This is the path of the Salaf: the first three generations praised by the Prophet ﷺ.

Why are there different schools of aqeedah?+

Over the centuries, different methods of studying creed developed. Groups like the Mu'tazilah used philosophical reasoning that contradicted revealed texts. Later schools like the Ash'ariyyah and Maturidiyyah developed their own theological methods. The books in this guide follow the Atharī or Salafī path: taking the Qur'an and Sunnah as the companions and the first three generations understood them, without re-interpreting them through outside philosophy.

Continue Learning

All Islamic Guides

Browse guides on fiqh, hadith, Quran, and more.

Aqeedah Books Library

Every aqeedah book in our library.

Why Islam?

Proofs and answers to the biggest questions.

Hadith Guide

Start studying the Sunnah alongside your aqeedah.