A Death in Tus

On a Monday morning in Jumada al-Akhira 505 AH / December 1111 CE, in the city of Tus in Khorasan, Abu Hamid Muhammad ibn Muhammad al-Ghazali departed this world. He was approximately fifty-five years old. Those present reported that he had risen early that morning, performed the Fajr prayer, wrapped himself in his shroud as was his custom in those final days of illness, and laid down to await death with the tranquility of a man who had long since made his peace with the world. He had a Sufi's woolen garment (khirqa) and a copy of the Bukhari on his chest. Before the morning had passed, his soul departed.

The news of his death spread rapidly across the Islamic world. Among scholars, it was received as a calamity comparable to a great defeat — for al-Ghazali had been the greatest defender of Sunni Islam of his era, the man who had answered the most dangerous intellectual challenges facing the religion in his time, and whose spiritual teachings had reinvigorated the inner life of Muslim practice across the community.

Imam al-Subki, writing in his "Tabaqat al-Shafi'iyya al-Kubra," preserves the judgment of posterity: "Al-Ghazali is the proof of Islam and Muslims, the imam of the imams of religion, a sea that drowns out other seas. He brought together in himself the instruments of knowledge: he was a master of fiqh, a master of kalam, a master of usul, a master of Sufism, and skilled in all branches of learning."

Origins and Early Education

Al-Ghazali was born in Tus, in the province of Khorasan (in modern northeastern Iran), in the year 450 AH / 1058 CE. His father was a spinner of wool (ghazzal — which may be the origin of the family name) who died while al-Ghazali was still a child, entrusting him and his brother Ahmad to the care of a Sufi friend with the instruction to educate them. This friend spent the small inheritance on their education until the money ran out, then advised them to enter a madrasa where they could study and receive stipends. Ahmad al-Ghazali grew up to be a noted Sufi preacher; his elder brother became one of the most important scholars in Islamic history.

In Tus, al-Ghazali studied the Islamic sciences with local scholars. He then traveled to Jurjan (in the Caspian region) to study with the scholar al-Isma'ili, making detailed notes on the lessons and returning to Tus — only to have his notes stolen by robbers on the road. His response to the robbers' taunt ("You claim to know, but your knowledge is in our hands") became a turning point: he memorized everything so thoroughly that no robber could ever take his knowledge from him again. This story, whether literal or legendary, captures something essential about al-Ghazali's relationship to learning — total internalization rather than mere external possession.

The Road to Baghdad and the Nizamiyyah

From Jurjan, al-Ghazali traveled to Nishapur, where he became the student of the greatest theologian of his era: Imam al-Haramayn al-Juwayni (419-478 AH), the leading Ash'ari theologian and Shafi'i jurist of his time. Al-Ghazali spent approximately eight years under al-Juwayni's direction, mastering Ash'ari theology, Shafi'i jurisprudence, philosophical argumentation, and the formal sciences of Islamic learning at the highest level. Al-Juwayni recognized al-Ghazali's extraordinary capabilities — reportedly calling him "a sea that overwhelms" when al-Ghazali would pose questions that challenged even his teacher.

After al-Juwayni's death in 478 AH, al-Ghazali came to the attention of Nizam al-Mulk, the great Seljuk vizier, who maintained a gathering of scholars at his camp. Al-Ghazali distinguished himself among the learned men assembled there, and in 484 AH Nizam al-Mulk invited him to become the head teacher (ra'is al-asatidha) of the Nizamiyyah Madrasa in Baghdad — the most prestigious academic appointment in the Islamic world.

Al-Ghazali was thirty-four years old. He was at the absolute peak of professional and social success: the most celebrated scholar in the Islamic world, teaching at its greatest institution, with three hundred students sitting at his feet, consulted by rulers and ministers on questions of law and theology. He was, in the language of his time and ours, a success beyond measure.

The Crisis and the Departure

In 488 AH / 1095 CE, al-Ghazali experienced a crisis that he described in detail in his autobiographical "al-Munqidh min al-Dalal" (Deliverance from Error) — one of the most honest and searching accounts of spiritual crisis in the literature of any religion.

He realized that the religion he practiced and taught was, in his inner life, largely performance. His teaching was excellent; his scholarship was genuine; but the driving motivation, if he examined it honestly, was reputation — the respect of scholars, the admiration of students, the approval of rulers. He was not praying and studying for Allah; he was doing so for the world. And he recognized that this was spiritually fatal — that a person who performs religious acts for worldly recognition receives his reward in that recognition and has nothing left for the hereafter.

Beyond this moral-spiritual crisis was an intellectual one: his engagement with philosophy — in preparation for his refutation of the philosophers — had shaken his confidence in the certainty of ordinary knowledge. He experienced a period in which he could not find solid ground on which to build genuine belief, a skepticism that paralyzed him for a time before resolving in a return to the certainty of prophetic revelation.

The combination of these crises produced a physical collapse: he lost the ability to speak for approximately two months. Doctors said the condition had no bodily cause. Al-Ghazali understood it as divine intervention — Allah was removing from him the ability to perform publicly what he was doing falsely in private.

In Dhul-Qa'da 488 AH, al-Ghazali departed Baghdad, telling people he intended to go to Mecca. He gave away most of his property, made arrangements for his family, and began what would become eleven years of wandering — Damascus, Jerusalem, Mecca, Medina, and eventually a return to Tus, where he lived simply with a small group of students and Sufi companions in a khanqah (Sufi lodge) and madrasa of his own founding.

The Ihya Ulum al-Din

The great work that emerged from this period of wandering and spiritual renewal was "Ihya Ulum al-Din" (Revival of the Religious Sciences), completed approximately 499 AH / 1106 CE. The Ihya is organized in four quarters of ten books each (forty books total), covering the outer forms of worship, the customs of daily life, the destructive qualities of character that prevent spiritual progress, and the saving qualities that enable it.

The Ihya's central argument is that Islamic religion had, in al-Ghazali's era, degenerated into two forms of emptiness: the legalism of the fuqaha (jurists) who knew every technical ruling but had no inner life, and the intellectualism of the theologians who could defend every dogma but felt nothing. True Islam — the Islam of the Prophet ﷺ and his Companions — integrated outer practice and inner reality: the prayer was performed correctly AND the heart was present before Allah; the fast was observed correctly AND the soul was genuinely humbled; the zakat was paid correctly AND the love of property had been genuinely subdued.

Al-Ghazali drew on Sufi spiritual wisdom — the analysis of the heart's diseases and remedies developed by scholars like al-Muhasibi, al-Qushayri, and others — and integrated it into a framework solidly grounded in Quran, hadith, and Shafi'i jurisprudence. The Ihya was not a Sufi alternative to Sunni fiqh; it was a demonstration that Sunni fiqh, properly understood, was always about the inner as much as the outer.

A critical note for readers of the Ihya: al-Ghazali cited hadith extensively throughout the work, and many of these narrations are weak or fabricated. The Egyptian scholar Abd al-Rahim al-Iraqi (725-806 AH) performed a complete takhrij (authentication) of every hadith in the Ihya in his work "al-Mughni an Haml al-Asfar fi Takhrij ma fi al-Ihya min al-Akhbar," identifying those that are weak, very weak, or not found with any chain. Readers and students of the Ihya should consult al-Iraqi's takhrij alongside the main text to avoid citing weak narrations as authentic reports from the Prophet ﷺ.

Tahafut al-Falasifa: The Philosophical Refutation

Among al-Ghazali's theological contributions, "Tahafut al-Falasifa" (The Incoherence of the Philosophers) occupies a unique place. Written before his spiritual crisis, during his Baghdad years, it is the most rigorous critique of Islamic philosophy ever written — and it came from someone who had mastered that philosophy more thoroughly than almost any non-philosopher of his era.

Al-Ghazali prepared for the Tahafut by writing "Maqasid al-Falasifa" (The Intentions of the Philosophers) — a precise summary of philosophical positions that he later used as a target. His method in the Tahafut is forensic: he takes each of the twenty main philosophical claims he wishes to address and shows that the philosophers' own logical methods cannot establish those claims. The Tahafut is not an argument from religious authority ("the Quran says otherwise") but a logical argument: even on purely rational grounds, the philosophers have not proven what they claim.

Three of the twenty positions he addressed he declared to be not merely mistaken but unbelief (kufr): the claim that the world is eternal without beginning, the claim that Allah does not know particular contingent events, and the denial of bodily resurrection. These are the positions where philosophical speculation most directly contradicts the foundational commitments of Islam as communicated through prophetic revelation.

The Tahafut provoked the great Andalusian philosopher Ibn Rushd (Averroes) to write "Tahafut al-Tahafut" (The Incoherence of the Incoherence) approximately fifty years later — the greatest medieval philosophical counter-argument to al-Ghazali's critique. The debate between these two positions has never been fully resolved, which is itself evidence of how fundamental the questions at stake are.

The Ahl us-Sunnah Assessment

Al-Ghazali is one of the most celebrated scholars in Sunni Islamic history. The honorific "Hujjat al-Islam" (Proof of Islam) — given by later scholars, not self-claimed — reflects the consensus judgment that his work defended and strengthened Islam in a time of intellectual challenge. His position in Sunni scholarship is approximately analogous to that of Augustine in the Latin Christian tradition: a figure of enormous influence whose thought shaped the tradition for centuries but whose specific positions on individual questions continue to be debated.

His theology is Ash'ari — mainstream Sunni, accepted as valid by the overwhelming majority of Sunni scholars. His fiqh is Shafi'i — one of the four accepted madhabs. His spirituality integrates what is authentically sound in the Sufi tradition with firm grounding in Quran and Sunnah. He was a Hanbali in his personal asceticism (though not in his fiqh) and had deep respect for Imam Ahmad ibn Hanbal's insistence on holding fast to the transmitted texts.

He died as he had lived in his final years — simply, spiritually focused, dressed in woolen ascetic clothing, holding a copy of Sahih al-Bukhari, the greatest collection of the Prophet's ﷺ authenticated sayings. That image — the greatest intellect of his era returning at the end to the Prophet's ﷺ words — is perhaps the most fitting summary of his life and thought.

Sources:

Al-Ghazali, al-Munqidh min al-Dalal (Deliverance from Error), trans. Richard McCarthy
Al-Ghazali, Ihya Ulum al-Din (Revival of the Religious Sciences)
Al-Ghazali, Tahafut al-Falasifa (The Incoherence of the Philosophers), trans. Michael Marmura
Abd al-Rahim al-Iraqi, al-Mughni an Haml al-Asfar (Takhrij of the hadith in the Ihya)
Al-Subki, Tabaqat al-Shafi'iyya al-Kubra
Ibn Khallikan, Wafayat al-A'yan
W. Montgomery Watt, Muslim Intellectual: A Study of Al-Ghazali (Edinburgh: Edinburgh University Press, 1963)
Frank Griffel, Al-Ghazali's Philosophical Theology (Oxford: Oxford University Press, 2009)
Eric Ormsby, Ghazali: The Revival of Islam (Oxford: Oneworld, 2008)