The Doctrine of Monotheism (Summary)
What Is The Doctrine of Monotheism About?
Tauhid (Islamic monotheism, literally "making one", the doctrine of the oneness of God) is examined from a Hadith-based and historical perspective. The central point is that Tauhid does not consist merely in believing in a single Creator, but in His exclusive worship. Through the Ayat (verses) of the Qur'an, it is shown that the pre-Islamic Arab Mushrikun (polytheists, literally "those who associate partners") already believed in Allah as the sole Creator, and that their Shirk (polytheism, associating partners with Allah) consisted, above all and in the first place, in worshipping other beings alongside Him.
The main part then systematically develops the core theological argumentation on Tauhid, Shirk and Takfir on the basis of the Qur'an, the Sunnah and the statements of the early generations (Salaf).
Key Points of The Doctrine of Monotheism
- Tauhid (monotheism) means the exclusive worship of Allah — not merely belief in Him as Creator.
- The pre-Islamic Arab polytheists (Mushrikun) already believed in Allah as the sole Creator; their Shirk concerned above all and in the first place worship.
- The declaration of faith la ilaha illallah literally means "There is no one worthy of worship (Ilah) except Allah" — not "no Creator except Allah".
- Tauhid is divided into three categories: Rububiyyah (Allah's oneness as Creator and Sustainer), Uluhiyyah (Allah's oneness in worship) and Al-asma' wa-s-Sifat (Allah's oneness in His names and attributes).
- A "polytheistic Muslim" is excluded: Islam (understood as Ikhlas, sincere devotion to Allah alone) and Shirk (associating partners with Allah) are necessarily opposites.
- Ignorance (Jahl) can protect against Takfir in narrowly defined cases, but does not turn an actual polytheist into a monotheist.
- Takfir is not an automatic legitimisation of violence — the book distances itself both from this equation and from historical extreme positions such as the Khawarij.
- A dedicated chapter explicitly warns against excess (Ghuluww) in Takfir and names concrete impediments (Mawani'u t-Takfir) that guard against a hasty verdict of Takfir.
- All prophets — Noah (Nuh), Abraham (Ibrahim), Moses (Musa), Jesus (Isa) and Muhammad صلى الله عليه وسلم — proclaimed the same core monotheism; only the specific legal systems differed.
- The call to monotheism always precedes the other commandments and prohibitions in prophetic preaching.
- Shirk is not forgiven without sincere repentance (Taubah).
- The Islamic science of transmission through chains of narration (Hadith science with Isnad verification) is unique in all of human history — demonstrated through comparison with the textually documented history of alteration of the Bible and Torah.
Content Structure of the Book
- Foreword on socio-political questions: criticism of the criminalisation of Islamic theological discourse, and a refutation of Guido Steinberg's definition of Takfir.
- Introduction: the role of transmission in religions, a comparison with the textual criticism of the Bible and Torah, the three sources of Islamic law (Qur'an, Sunnah, consensus/Ijma'), and the "Hadith of the 73 sects".
- The actual meaning of monotheism: the meaning of the Shahada, the term Ilah, the threefold division of Tauhid, and the linguistic derivation of "Islam".
- Polytheism (Shirk): clarification of the term, major and minor Shirk, and the pre-Islamic Arabs' theory of Shafa'ah (intercession).
- The subject of Takfir: the meaning of Takfir, a historical excursus on the Khawarij, and the excuse of ignorance (Al-'udhr bi-l-Jahl).
- The difference between polytheist and monotheist: Ikhlas, Hanifiyyah, Millatu Ibrahim, disavowal of Taghut, and sincere repentance (Taubah) as the only way through which Shirk is forgiven.
- Critique of method: the treatment of unambiguous (Muhkam) and ambiguous (Mutashabih) texts, and a refutation of common false arguments through concrete Hadith case studies.
- Closing word and appendix: transliteration rules, an index of authors, and a bibliography.
Key Terms (Glossary)
- Al-asma' wa-s-Sifat
- Allah's oneness in His names and attributes — the third category of Tauhid.
- Al-'udhr bi-l-Jahl
- The excuse of ignorance — a legitimate principle of Islamic theology that offers protection against Takfir in certain areas, though it is not universally and unconditionally applicable.
- Hadith / Isnad
- A transmitted report from the Prophet, or its chain of transmission — the central tool of verification in Islamic Hadith science.
- Hanifiyyah / Millatu Ibrahim
- The pure, original monotheism of Abraham (Ibrahim); "the religion of Abraham".
- 'Ibadah
- Worship, devotion; linguistically related to 'Abd (servant).
- Ikhlas
- The purification of worship, devoted exclusively to Allah — the core meaning of "Islam".
- Ilah
- "One worthy of worship" — the core term of the declaration of faith, not synonymous with "Creator".
- Khawarij
- An early Islamic sect that excluded Muslims from Islam through Takfir merely for major sins — a historical example of excess (Ghuluww) in Takfir.
- Mushrik (plural: Mushrikun)
- A polytheist, literally "one who associates partners [with Allah]".
- Rabb
- Lord, Creator, Sustainer and Provider.
- Rububiyyah
- Allah's oneness as Creator, Sustainer and Provider — the first of the three categories of Tauhid.
- Salaf
- The early, righteous generations – and in particular their scholars.
- Shafa'ah
- Intercession; the central justificatory theory behind pre-Islamic Arab Shirk.
- Shirk
- Polytheism, associating partners with Allah; attributing worship or divine attributes to a being besides Allah. The opposite of Tauhid.
- Taghut
- Anything besides Allah that is served or obeyed unconditionally (idols, tyrants).
- Takfir
- The verdict that a person is Kafir (not a Muslim).
- Taubah
- Sincere repentance from sin in general; in the case of Shirk, the only way back into Islam.
- Tauhid
- Islamic monotheism; the doctrine of the oneness of God — affirming Allah as "One" in His creative power, His names and attributes, and in worship.
- Uluhiyyah
- Allah's oneness in worship (also called Tauhidu l-'ibadah) — the second category of Tauhid.
Methodology and Sources
The argumentation follows the methods of Hadith science (with Isnad criticism) and rests on the Qur'an and Sunnah, with a Qur'an translation produced specifically for this work following a comparison of established translations. Classical Hadith collections are cited (Sahih al-Bukhari, Sahih Muslim, Sunan Abi Dawud, Sunan at-Tirmidhi, Sunan Ibn Majah, Musnad Ahmad ibn Hanbal), as well as early Tafsir works (Tafsir at-Tabari, Tafsir Ibn Abi Hatim ar-Razi, Tafsir Muqatil ibn Sulaiman). To substantiate the accuracy of the Islamic history of transmission, non-Islamic comparative sources are also drawn upon, such as the biblical scholar Bart D. Ehrman and an Austrian Protestant school textbook on biblical studies. Every scholar cited is briefly introduced in a footnote with their dates and scholarly rank.
Who Is The Doctrine of Monotheism Relevant For?
The book is addressed to Muslims who wish to understand the theological foundations of Tauhid authentically from the earliest sources, as well as to students of religious studies and readers interested in Islamic creed (Aqidah). In terms of content, the work positions itself explicitly against two extremes: against a lax view according to which a mere verbal profession of Islam suffices regardless of practised Shirk, and against historical and modern extreme positions such as the Khawarij, who exclude Muslims from Islam through Takfir merely for sins.
Further Reading
Chronological Index of Early Islamic Authors
Sorted by date of death (first by the Hijrah calendar, then by the Christian calendar).