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A significant person in Islam, Al-Ghazali: HSC Studies of Religion

Syllabus dot point

“Significant people and schools of thought: explain the contribution to the development and expression of Islam of ONE significant person OR school of thought, other than Muhammad and the Four Rightly Guided Caliphs, drawn from: Khadijah Bint Khuwaylid, A'isha Bint AbuBakar, Fatima Al Zahra, Imam Malik, Imam Abu Hanifa, Imam Al-Shafi, Abu Ali Hussein Ibn Sina, Rabi'a al-Adawiyya, Al-Ghazali, Sayyid Maududi, Sayyid Qutb; analyse the impact of this person OR school of thought on Islam (this page: Al-Ghazali)”

HSCStudies of ReligionIslam Depth Study14 min read

Quick answer

Al-Ghazali (1058 to 1111), called Hujjat al-Islam ("the Proof of Islam"), was a Shafi'i jurist and Ash'ari theologian who became the most famous teacher of his age at the Nizamiyya college in Baghdad (1091). In 1095 a spiritual crisis left him unable to lecture: "God caused my tongue to dry up". He left Baghdad for about eleven years of Sufi devotion, travel and Hajj, concluding that the mystics "were men who had real experiences, not men of words". His contribution: the Ihya' 'Ulum al-Din (Revival of the Religious Sciences), forty books that explain the inner meaning of worship and the purification of the heart; the reconciliation of Sufism with the Sharia and Sunni belief; a critique of the philosophers (Tahafut al-Falasifa); and the autobiography al-Munqidh min al-Dalal. Impact: he made Sufism "an acceptable part of orthodox Islam" (Britannica) and shaped Sunni spirituality for nine centuries. Critics: Ibn Rushd defended philosophy; hadith scholars criticised weak reports in the Ihya; some Muslims reject its Sufi elements.

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What this dot point is asking

NESA wants you to explain how ONE significant person or school of thought contributed to the development (how Islam grew and changed) and expression (how Islam is lived and practised) of Islam, and to analyse its impact. This page uses Abu Hamid al-Ghazali, who is on the syllabus list and was the example in NESA's own marking guidelines in 2021, 2022, 2023 and 2025.

The trap is to write a philosophy essay. Al-Ghazali matters in Studies of Religion because he changed how ordinary Muslims pray, fast, give and understand their faith: every point must link to Islamic belief (tawhid, akhira, the Qur'an) or practice (the Five Pillars, dhikr, the Sharia).

The must-know spine

Life: born 1058, Tus (Khurasan); studied under al-Juwayni at Nishapur; Nizamiyya, Baghdad, 1091; crisis from July 1095 (Rajab 488 AH); left Baghdad November 1095; Damascus, Jerusalem, Hebron, Mecca and Medina; returned to teach at Nishapur 1106; died at Tus, 18 December 1111. Schools: Shafi'i law, Ash'ari theology, Sufi practice. Works: Maqasid al-Falasifa (Aims of the Philosophers); Tahafut al-Falasifa (Incoherence of the Philosophers); Ihya' 'Ulum al-Din (4 quarters x 10 books); Kimiya-yi Sa'adat (Alchemy of Happiness, Persian); al-Munqidh min al-Dalal; Mishkat al-Anwar; al-Mustasfa. Key ideas: knowledge that leads to action; sincerity (ikhlas) and intention (niyya); remembrance (dhikr, Qur'an 13:28); diseases and cures of the heart; Sufism within the Sharia. Critics: Ibn Rushd (Tahafut al-Tahafut); weak hadith in the Ihya; Almoravid book-burning; Salafi critics.

The answer

Who al-Ghazali was

Abu Hamid Muhammad al-Ghazali was born in 1058 at Tus, in Khurasan (north-east Iran). Orphaned young, he studied law and theology at Tus, Jurjan and Nishapur, where he became a leading student of al-Juwayni, the foremost Ash'ari theologian of the day. In 1091 the Seljuk vizier Nizam al-Mulk appointed him chief professor at the Nizamiyya college in Baghdad, the most prestigious teaching post in the Sunni world. Hundreds attended his lectures.

His autobiography, al-Munqidh min al-Dalal (Deliverance from Error), describes a search for certain knowledge. He examined the four groups of seekers he knew: the theologians (mutakallimun), the philosophers, the Batiniyya (who claimed a hidden, infallible Imam) and the Sufis. He found that the first three could not give him certainty.

The crisis of 1095

"For nearly six months beginning with Rajab 488 A.H. (= July 1095 A.D.) ... God caused my tongue to dry up so that I was prevented from lecturing." He could hardly eat, and doctors could not help him. He realised that his teaching was driven partly by the desire for fame, not by devotion to God. In November 1095 he left Baghdad, saying he was going on pilgrimage. He spent nearly two years in Damascus, then travelled to Jerusalem, Hebron and Mecca and Medina for the Hajj.

In the Sufis he found what he had lacked. "I apprehended clearly that the mystics were men who had real experiences, not men of words", and what remained "was not to be attained by oral instruction and study but only by immediate experience and by walking in the mystic way". (Describing an earlier period of radical doubt, he had already written that his certainty returned not "by systematic demonstration or marshalled argument, but by a light which God most high cast into my breast".) After about eleven years he returned to teaching at Nishapur in 1106, then retired to Tus, where he died in 1111.

His contribution to the expression of Islam

1. The Revival of the Religious Sciences (Ihya' 'Ulum al-Din). His masterpiece has forty books in four quarters:

Quarter Content Effect on practice
Acts of worship (ibadat) Knowledge, belief, purity, prayer, zakat, fasting, Hajj, Qur'an recitation, dhikr Explains the inner meaning of each pillar, so worship is done with presence of heart
Customs of daily life (adat) Eating, marriage, earning a living, friendship, travel, music Brings the whole of life under the intention to serve God
Vices that destroy (muhlikat) Anger, envy, love of wealth and status, pride, hypocrisy (riya') Diagnoses the "diseases of the heart"
Virtues that save (munjiyat) Repentance, patience, gratitude, fear and hope, trust in God (tawakkul), love of God, sincerity Shows the path to closeness with God

The title itself is a claim: that the religious sciences had become dry and worldly and needed reviving. NESA's 2025 guidelines note that "His guidance led Muslims away from superficial religious practises toward a more authentic and transformative faith, where intellect and spirituality work in harmony."

2. Worship with the heart
Al-Ghazali taught that outward acts without inward presence are hollow, and inward feeling without outward obedience is self-deception. Prayer (salat) should be performed with humility and awareness of God; fasting should restrain the tongue and eyes as well as the stomach; zakat purifies the giver from love of wealth. The Qur'an grounds this: "Unquestionably, by the remembrance of Allah hearts are assured" (13:28, Sahih International).
3. Ethics of the heart
His analysis of vices and virtues gave Muslims a practical method of self-examination (muhasaba) and self-discipline. His Persian summary, the Kimiya-yi Sa'adat (Alchemy of Happiness), took this teaching to a wider audience.
4. A model of the searching believer
Al-Munqidh is one of the first spiritual autobiographies in Islamic literature. It models honest doubt, the search for certainty and the humility to change one's life.

His contribution to the development of Islam

1. Sufism within orthodoxy
Before al-Ghazali, many jurists and theologians distrusted the Sufis, some of whose ecstatic statements seemed to blur the line between God and creation. Al-Ghazali insisted that true Sufism keeps the Sharia and the creed of tawhid, and he read ecstatic sayings as expressions of intense experience rather than claims to become God. Britannica sums up the result: he made "Sufism (Islamic mysticism) an acceptable part of orthodox Islam". NESA's 2022 and 2023 guidelines say his "patronage of the Sufi movement allowed Sufism to develop an acceptance and credibility among other groups within Islam".
2. Faith and reason
In the Tahafut al-Falasifa (Incoherence of the Philosophers) he argued that philosophers such as Ibn Sina were inconsistent on twenty points and that three of their doctrines contradicted Islam: that the world is eternal, that God knows only universals and not particular things, and that there is no bodily resurrection. Yet he accepted logic and mathematics as valid tools, and he used logic in his work on legal theory, al-Mustasfa. The result was a lasting settlement: reason serves revelation.
3. Defending Sunni unity
He wrote against the Batiniyya, whose teaching of a hidden, infallible Imam challenged Sunni authority, and strengthened the synthesis of Shafi'i law, Ash'ari theology and Sufi spirituality that madrasas taught for centuries.
4. A renewer
Many Sunni Muslims regard him as the mujaddid, the renewer of the faith promised for each century, for the fifth century of Islam.

Analysing his impact

Area Impact
Spirituality The Ihya remains one of the most studied Islamic books after the Qur'an and hadith collections
Sufism Accepted within Sunni orthodoxy; the great Sufi orders spread in the centuries after him
Theology Ash'ari theology strengthened; the authority of philosophical metaphysics in religion limited
Law Logic entered legal theory (usul al-fiqh) through al-Mustasfa
Today Translated and taught widely; NESA 2025: he shaped Muslims' "spiritual, ethical and intellectual lives"

Critics and limits

  • Ibn Rushd (Averroes, 1126 to 1198) answered with Tahafut al-Tahafut (The Incoherence of the Incoherence), defending philosophy as compatible with Islam.
  • Science and decline. Some modern writers blame al-Ghazali for a decline of science in the Islamic world. Many historians reject this, since science, astronomy and medicine continued to flourish in Muslim societies for centuries after him.
  • Hadith. Hadith scholars criticised the Ihya for including weak or unsupported reports; the scholar Zayn al-Din al-'Iraqi later traced and graded them.
  • Opposition in his time. Copies of the Ihya were burned in Almoravid Spain soon after it appeared.
  • Salafi critics reject Sufi practices he accepted, such as seeking guidance from a Sufi master and some forms of dhikr.
Answering "Evaluate how ONE significant person provides direction for a meaningful life for Islamic adherents" (7 marks, 2025)

Step 1: Judgement

"Al-Ghazali provides strong direction for a meaningful life because he taught Muslims to join outward obedience to inward sincerity, so that every act can bring them closer to Allah."

Step 2: Evidence of direction

The Ihya's inner meaning of the pillars; dhikr and Qur'an 13:28; the purification of the heart from pride, envy and hypocrisy; his own crisis as a model of sincerity (al-Munqidh).

Step 3: Limits

Weak hadith in the Ihya; Salafi criticism of Sufi elements; the demanding asceticism of his model.

Step 4: Conclude

"His direction remains central for Sunni spirituality, but it is one influential path within a diverse tradition."

Common traps
Writing only about philosophy
The Tahafut matters, but the dot point is about the development and expression of Islam. Foreground the Ihya and worship.
Calling him anti-reason
He accepted logic and mathematics; he opposed specific metaphysical claims.
Copying garbled summaries
NESA's 2021 sample answer describes a "critique of Asharite theology". Al-Ghazali was himself an Ash'ari theologian; say he developed Ash'ari teaching on God's power and human responsibility.
Leaving out critics
"Analyse" and "evaluate" need Ibn Rushd, hadith criticism or Salafi objections.
Inventing quotations
Use the verified lines from al-Munqidh and the Qur'an, not internet sayings attributed to him.

In one sentence

Al-Ghazali developed Islam by reconciling Sufi spirituality with the Sharia and Sunni belief and by setting reason in the service of revelation, and he transformed its expression through the Revival of the Religious Sciences, which taught Muslims to pray, fast, give and live with sincerity of heart, an impact that shaped Sunni Islam for nine centuries even as philosophers, hadith scholars and Salafi critics contested parts of it.

Try this

Q1. Outline ONE contribution of al-Ghazali to Islam. (3 marks)

  • What the marker wants. For example the Ihya or the acceptance of Sufism, with a detail and its significance.

Q2. How is the contribution of al-Ghazali evident in Islam today? (5 marks)

  • What the marker wants. The Ihya studied in mosques and translation; Sufi orders within Sunni Islam; the emphasis on niyya and ikhlas in worship; a judgement.

Q3. Analyse the impact of al-Ghazali on Islam. (20 marks)

  • What the marker wants. Impact on spirituality, Sufism, theology, law and unity, with evidence, critics and a sustained judgement.

Exam-style questions

Questions in the style of NESA exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.

2025 HSC SoR II Q26 (c)Past paper7 marks
Evaluate how ONE significant person or school of thought, other than Muhammad and the Four Rightly Guided Caliphs, provides direction for a meaningful life for Islamic adherents.
Show worked answer →

Criteria (NESA 2025 marking guidelines, SoR I Q15(c), SoR II Q26(c)). 7 marks: a thorough evaluation of how ONE significant person or school of thought provides direction for a meaningful life for Islamic adherents, with clear and relevant evidence and integrated, accurate terminology. 5 to 6: a sound evaluation. 3 to 4: an explanation. 2: an outline. 1: general statements about Islam.

NESA's "answers could include" list used Al-Ghazali. It said he "provided profound direction for Muslims significantly shaping their spiritual, ethical and intellectual lives"; that knowledge should be pursued as "true knowledge which leads to spiritual and moral growth"; that he "helped Sufism gain greater acceptance in Islam"; and that he taught worship "with the utmost mindfulness and devotion", "striving for excellence (Ihsan) in every act".

A 7-mark evaluation.

  1. Judgement. Al-Ghazali gives strong direction because he joined outward obedience (Sharia) to inward sincerity, so every act of worship becomes meaningful.
  2. Worship with presence. The Ihya explains the inner meaning of prayer, fasting, zakat and Hajj; the heart finds rest in remembrance of God (Qur'an 13:28).
  3. Purifying the heart. Its third and fourth quarters diagnose vices (pride, envy, hypocrisy) and cultivate virtues (repentance, patience, gratitude, trust in God).
  4. Knowledge that transforms. His own crisis (1095) taught that learning without sincerity is empty; the mystics are "men who had real experiences, not men of words" (al-Munqidh).
  5. Limits. Critics note weak hadith in the Ihya; some Muslims reject its Sufi elements; its demanding asceticism suits few.
  6. Conclusion. Significant and lasting direction for the inner life of Sunni Muslims, though not uncontested.

Source: NESA, 2025 HSC Studies of Religion examination and marking guidelines.

2023 HSC SoR II Q31Past paper20 marks
How does Islam guide adherents towards living a better life? Make reference to at least TWO of the following: significant person or school of thought; ethics; significant practices.
Show worked answer →

Criteria (NESA 2023 marking guidelines, SoR I Q20, SoR II Q31). 17 to 20: a sustained and reasoned response about the ways Islam guides adherents towards living a better life with reference to at least TWO areas; a cohesive, well-structured response with detailed, relevant and accurate information; relevant and accurate terminology. Lower bands: reasoned (13 to 16), some detail (9 to 12), general statements (5 to 8 and 1 to 4).

NESA's significant person was Al-Ghazali: "an example of constantly seeking to be a 'better' Muslim", whose Revival of the Religious Sciences "offered insight into prayer and knowledge of Allah"; who "taught and wrote extensively in the fields of theology, philosophy, law and mysticism"; and whose "patronage of the Sufi movement allowed Sufism to develop an acceptance and credibility among other groups within Islam".

How to use him. Show the Ihya turning each practice (salat, sawm, zakat, Hajj) into a means of purifying the heart, and his ethics of the heart (removing envy, pride and hypocrisy) as the path to a "better life" in this world and the next. Pair with Hajj or an ethical area for the second area.

Source: NESA, 2023 HSC Studies of Religion examination and marking guidelines. The three options were printed as bullet points in the paper.

2022 HSC SoR II Q31Past paper20 marks
Explain how both diversity and unity are expressed within Islam. Make reference to at least TWO of the following. Significant person or school of thought; Ethics; Significant practices.
Show worked answer →

Criteria (NESA 2022 marking guidelines, SoR I Q20, SoR II Q31). 17 to 20: a sustained and reasoned response about how diversity and unity in Islam are expressed within at least TWO areas; a cohesive, well-structured response with detailed, relevant and accurate information; relevant and accurate terminology.

NESA's sample: "Al-Ghazali was an example of both unity and diversity within Islam." His writings developed "a synthesis of ideas from across a range of fields and strands of Islam", "allowing for diversity in Islam", and his support gave Sufism "acceptance and credibility".

Unity. He grounded everything in tawhid, the Qur'an and the Sharia, and defended Sunni belief against the philosophers and the Batiniyya (Isma'ili esoterics).

Diversity. He brought Sufi spirituality, Ash'ari theology, Shafi'i law and Aristotelian logic into one framework, so different expressions of Islam could coexist within Sunni orthodoxy. His critics (Ibn Rushd; later hadith scholars) show continuing diversity.

Source: NESA, 2022 HSC Studies of Religion examination and marking guidelines. The three options were printed as bullet points in the paper.

2021 HSC SoR II Q26 (c)Past paper6 marks
In what ways has ONE significant person or school of thought, other than Muhammad and the Four Rightly Guided Caliphs, guided adherents on the straight path?
Show worked answer →

Criteria (NESA 2021 marking guidelines, SoR I Q15(c), SoR II Q26(c)). 6: thorough and accurate information on the ways ONE significant person or school of thought has guided adherents on the straight path, with clear and relevant evidence integrated, and relevant, accurate terminology. 4 to 5: accurate information with clear evidence. 2 to 3: some accurate information. 1: general statements.

NESA's sample answer used Al Ghazali, discussing God's power and human responsibility and a "middle ground between theology and mysticism". Write it accurately:

  1. Belief. As an Ash'ari theologian he taught that God creates all things, while humans remain responsible for the acts they "acquire" (kasb) and will answer for them on the Day of Judgement (akhira).
  2. Balance. He accepted Sufism as the path of sincere devotion, but insisted it stay within the Sharia; in his writings he warned against taking the ecstatic sayings of some Sufis as claims of union with God, which would compromise tawhid.
  3. Practice. The Ihya guides believers through the Five Pillars with attention to intention (niyya) and remembrance (dhikr), which is how the "straight path" (Qur'an 1:6) is walked daily.

Source: NESA, 2021 HSC Studies of Religion examination and marking guidelines.

Practice questions

Original practice questions graded from foundation to exam level, each with a full worked solution. Try them before revealing the solution.

foundation3 marks
Outline ONE contribution of al-Ghazali to Islam. (Original)
Show worked solution →

Al-Ghazali wrote the Ihya' 'Ulum al-Din (Revival of the Religious Sciences), which explains the inner meaning of Islamic practices such as prayer and fasting and teaches Muslims to purify the heart of vices like pride and envy. It joined Sufi spirituality to the Sharia, so that sincere devotion became part of mainstream Sunni Islam.

Marking: 1 for the contribution, 1 for detail, 1 for its significance for Islam.

core5 marks
Explain how al-Ghazali's personal crisis shaped his contribution to Islam. (Original)
Show worked solution →
The crisis
In 1095, at the height of his fame in Baghdad, al-Ghazali found that "God caused my tongue to dry up so that I was prevented from lecturing". He concluded that his learning had been pursued partly for status, not for God.
The turn to Sufism
He studied the mystics and "apprehended clearly that the mystics were men who had real experiences, not men of words", then left Baghdad for about eleven years of devotion, travel and Hajj.
The result
From this came the Ihya, which teaches that knowledge must lead to action and sincerity (ikhlas), and al-Munqidh, which models the search for certainty.
Significance
His story showed Muslims that intellectual and spiritual life belong together, a balance that shaped Sunni Islam.

Marking (Original): 5 for an accurate explanation linking the crisis to specific contributions, with evidence.

exam8 marks
Analyse the impact of al-Ghazali on the development and expression of Islam. (Original)
Show worked solution →
Spiritual expression
The Ihya made interior devotion (dhikr, niyya, ihsan) central to ordinary Sunni practice; it is still studied in mosques and study circles worldwide.
Sufism within orthodoxy
By grounding Sufism in the Sharia and Ash'ari belief, he helped it become accepted in mainstream Sunni Islam (Britannica), preparing the ground for the spread of Sufi orders.
Theology and philosophy
The Tahafut limited the authority of Aristotelian metaphysics in religious matters while he accepted logic and mathematics, which entered Islamic law and theology through works such as al-Mustasfa.
Unity
He defended Sunni belief against the Batiniyya and strengthened the synthesis of law, theology and spirituality taught in madrasas.
Contested impact
Ibn Rushd rejected his critique of philosophy; some modern writers blame him for a decline in science, a claim many historians reject; hadith scholars criticised weak reports in the Ihya; Salafi Muslims reject some Sufi elements.
Judgement
A profound and lasting impact on the inner life and intellectual shape of Sunni Islam, alongside continuing debate.

Marking (Original): 8 for a sustained analysis across several areas, with evidence, critics and a judgement.

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Sources & how we know this

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