Nadir Shah's Invasion of India (1739): The Sack of Delhi, Peacock Throne and Koh-i-Noor
Nadir Shah's 1739 invasion of India — marked by the Battle of Karnal, the massacre of Delhi, and the seizure of the Peacock Throne and Koh-i-Noor — was the single most devastating blow ever dealt to the Mughal Empire, draining its treasury and shattering its prestige forever.
Nadir Shah's invasion of India in 1739 — remembered for the sack of Delhi, the seizure of the Mughal Peacock Throne, and the plunder of the Koh-i-Noor diamond — was the most devastating foreign incursion into Mughal India, emptying the imperial treasury, massacring an estimated 20,000–30,000 Delhiites, and precipitating the irreversible decline of the Mughal Empire.
Who Was Nadir Shah and Why Did He Invade India?
Nadir Shah (1698–1747 CE) was born into the Afshar Turkic tribe of Khorasan in northeastern Iran. Rising from obscure origins as a soldier of extraordinary natural talent, he reconstituted Persian power under the declining Safavid dynasty and eventually seized the throne of Persia for himself in 1736. Within a decade he had constructed one of the most formidable military empires of the 18th century, stretching from the Caucasus to Central Asia, earning renown as both a brilliant innovator in battlefield tactics and an administrator of brutal efficiency.
His invasion of India was driven by three interlocking motivations. First, the legendary wealth of the Mughal Empire — its overflowing treasury, the fabled Peacock Throne, and gems such as the Koh-i-Noor — represented a prize of incalculable value. Second, the Mughal Empire under Emperor Muhammad Shah "Rangila" (r. 1719–1748) was conspicuously weak: the emperor was notoriously pleasure-seeking and indolent, the court was torn by factional rivalries, and the once-dreaded Mughal army had decayed into a hollow force bereft of capable leadership. Third, Nadir Shah had a political pretext: the Mughal court had granted refuge to Afghan chieftains and fugitives who had rebelled against his authority. When diplomatic demands for their extradition went unanswered, Nadir Shah declared war and marched on India.
How Did the Battle of Karnal (1739) Open the Road to Delhi?
Nadir Shah crossed the Indus River in November 1738 and captured Lahore with minimal resistance. The Mughal Emperor, finally roused to action, assembled an enormous army and marched north to intercept the invader. The two forces met at Karnal in present-day Haryana on 13 February 1739.
Despite possessing a numerically superior force, the Mughals were outclassed in every tactical dimension. Nadir Shah deployed innovative zanbour — swivel guns mounted on camels — whose concentrated and mobile firepower devastated the Mughal cavalry formations before they could close for hand-to-hand combat. The Mughal command structure was fragmented and its commanders failed to coordinate any coherent response. The battle was decided within hours. Muhammad Shah himself was captured and became Nadir Shah's prisoner-guest. On 20 March 1739, Nadir Shah entered Delhi peacefully, with the Mughal Emperor riding at his side as a living symbol of his complete victory.
What Happened During the Massacre of Delhi on 22 March 1739?
Just two days after the triumphant entry into Delhi, the occupation turned catastrophic. A rumour swept through the city that Nadir Shah had been killed. Enraged Delhiites attacked and killed Persian soldiers stationed in the city's neighbourhoods. When Nadir Shah received word of the killings, he rode into the city in the early hours of 22 March and ordered a general massacre — the Qatl-e-Aam.
His soldiers fanned out through the densely populated quarters of Chandni Chowk and surrounding localities, killing without discrimination. The slaughter continued for several brutal hours. Contemporary Persian and Mughal chronicles place the death toll between 20,000 and 30,000 civilians. Nadir Shah eventually rode into the city and — reportedly on the intercession of a senior Mughal noble — called a halt. The massacre was deliberate state terror, designed to cow the population into submission and prevent any further organised resistance to the systematic looting that followed.
What Treasures Did Nadir Shah Seize from the Mughal Empire?
The looting of the Mughal treasury was staggering even by the extreme standards of premodern conquest. Among the most significant items seized:
- The Peacock Throne (Takht-e-Taus): Built for Emperor Shah Jahan in the 17th century and encrusted with rubies, emeralds, diamonds, and pearls, the Peacock Throne was the supreme symbol of Mughal imperial wealth and power. Nadir Shah transported it to Persia and it was never returned to India. When he was assassinated in 1747, the throne was broken apart and its gems dispersed; no authentic version survives.
- The Koh-i-Noor Diamond: Meaning "Mountain of Light," the Koh-i-Noor is one of the largest and most storied diamonds in history. Long held in the Mughal treasury, it was taken by Nadir Shah to Persia. After his assassination it passed to the Afghan Durrani dynasty, then to Sikh Maharaja Ranjit Singh of the Punjab, and finally to the British after the Second Anglo-Sikh War (1849). It is now set in the British Crown Jewels at the Tower of London. India, Pakistan, and Afghanistan have each periodically demanded its return.
- Additional Plunder: The Taj Maul diamond and vast quantities of gold, silver, and jewellery were also looted. Historical accounts estimate the total value of Nadir Shah's haul at approximately 700 million rupees — an astronomical figure that dwarfed any previous invader's takings from India, so immense that Nadir Shah was able to suspend taxation in Persia for three years upon his return.
How Does Nadir Shah's 1739 Invasion Compare to Timur's 1398 Invasion?
| Dimension | Timur's Invasion (1398 CE) | Nadir Shah's Invasion (1739 CE) |
|---|---|---|
| Ruler of Delhi | Mahmud Shah Tughlaq (last effective Tughlaq ruler) | Muhammad Shah "Rangila" (pleasure-seeking Mughal emperor) |
| Pretext | Punishing the Sultan for tolerating non-Muslims; invoked jihad rationale | Mughal court sheltered Afghan fugitives from Nadir Shah's authority; diplomatic demands left unaddressed |
| Key Battle | Battle of Delhi (17 December 1398): Timur neutralised Tughlaq war-elephants using buffaloes laden with burning material | Battle of Karnal (13 February 1739): Camel-mounted swivel guns (zanbour) routed the much larger Mughal army within hours |
| Massacre | Mass slaughter of Delhi's population; estimates range from tens of thousands to over 100,000; the city was left virtually deserted | Qatl-e-Aam (22 March 1739): 20,000–30,000 civilians killed in a single day on Nadir Shah's direct orders |
| Looting | Enormous wealth, artisans, and slaves transported to Samarkand; Delhi's buildings ransacked | Peacock Throne, Koh-i-Noor, Taj Maul diamond, and approximately 700 million rupees in gold, silver, and jewels taken to Persia |
| Treasures Taken | No single iconic object; skilled craftsmen abducted to beautify Samarkand; diffuse wealth seizure | The Peacock Throne and the Koh-i-Noor diamond became the most famous symbols of Mughal wealth permanently lost |
| Political Aftermath | Delhi Sultanate effectively collapsed; the Sayyid dynasty filled the vacuum; decades of fragmentation followed | Mughal Empire survived nominally under Muhammad Shah; imperial prestige was irreparably shattered |
| Territorial Changes | Timur withdrew rapidly with plunder; no permanent Indian territory was annexed | All Mughal territory west of the Indus — Sindh, Baluchistan, Punjab (west of Indus), Kabul, Kandahar — was permanently annexed to Persia |
| Long-Term Impact | Enabled rise of Sayyid and Lodi dynasties; ultimately opened the path for Babur and the Mughal founding a century later | Mughal treasury emptied; army's Central Asian recruitment base severed; Maratha and Afghan powers surged; led to the Third Battle of Panipat (1761) |
What Were the Long-Term Consequences of Nadir Shah's Invasion for the Mughal Empire?
The consequences of Nadir Shah's invasion were compounding and irreversible. The Mughal treasury was entirely emptied, stripping the dynasty of the financial capacity to maintain a professional army or project authority across its vast territory. The permanent cession of all Mughal territory west of the Indus cut off the traditional recruiting ground for Mughal military power — the Afghan and Central Asian cavalry that had formed the fighting backbone of the imperial army since Babur's founding conquest in 1526.
The psychological blow to Mughal prestige was equally devastating. Regional powers — the Maratha Confederacy, the Nawabs of Bengal, Awadh, and Hyderabad — accelerated their drives for autonomy, no longer fearing Mughal retribution. Ahmad Shah Abdali (Durrani), who had served as one of Nadir Shah's most capable generals and inherited Afghanistan after his assassination in 1747, invaded India repeatedly between 1748 and 1767. The cumulative instability culminated in the Third Battle of Panipat (14 January 1761), where Abdali's forces decisively defeated the Marathas — the last power capable of filling the Mughal vacuum — leaving the Indian political landscape comprehensively shattered on the eve of British colonial consolidation under the East India Company.
Frequently Asked Questions
What was the primary reason for Nadir Shah's invasion of India in 1739?
Nadir Shah invaded India primarily to plunder the immense wealth of the weakened Mughal Empire. His official pretext was that Emperor Muhammad Shah had granted refuge to Afghan chiefs who had rebelled against Nadir Shah's authority. The real motivation was the legendary richness of the Mughal treasury, combined with the empire's visible military and political weakness under Muhammad Shah "Rangila."
What happened to the Koh-i-Noor diamond after Nadir Shah took it from the Mughals?
After Nadir Shah took the Koh-i-Noor from the Mughal treasury in 1739, it passed through several rulers: from Nadir Shah's successors in Persia to the Afghan Durrani dynasty, then to Sikh Maharaja Ranjit Singh of the Punjab, and finally to the British East India Company after the Second Anglo-Sikh War (1849). It was formally presented to Queen Victoria and is now set in the Crown Jewels at the Tower of London. India, Pakistan, and Afghanistan have each demanded its return.
What was the significance of the Battle of Karnal (1739)?
The Battle of Karnal, fought on 13 February 1739, was significant because it exposed the complete military collapse of the Mughal Empire. Despite fielding a much larger army, the Mughals were decisively defeated within hours by Nadir Shah's superior tactics, particularly his use of camel-mounted swivel guns (zanbour). Muhammad Shah's capture at Karnal opened Delhi to occupation without a siege, making the subsequent massacre and plunder inevitable.
What was the Peacock Throne and what happened to it?
The Peacock Throne (Takht-e-Taus) was a magnificent jewel-encrusted throne commissioned by Mughal Emperor Shah Jahan in the 17th century. It was studded with rubies, emeralds, pearls, and diamonds, and was the supreme symbol of Mughal imperial power and wealth. Nadir Shah looted it in 1739 and took it to Persia. After his assassination in 1747, the original throne was broken apart and its gems scattered; no authentic version survives today.
How did Nadir Shah's invasion accelerate the fall of the Mughal Empire?
Nadir Shah's invasion devastated the Mughal Empire in three critical ways: it drained the entire imperial treasury, removing the financial basis for military power; it stripped away all territory west of the Indus, cutting off recruitment of Afghan and Central Asian cavalry; and it shattered the dynasty's prestige, emboldening the Marathas, Nawabs, and later Ahmad Shah Abdali to challenge Mughal authority. These compounding blows made the empire's eventual collapse inevitable within decades.
Sources and Further Reading
According to IGNOU's BHIC-133 (History of India from c. 1206–1707) and related modern history modules, the invasion of Nadir Shah is a core event for understanding the decline of the Mughal Empire and is directly examinable in the UPSC Civil Services Examination. Key primary sources include Tarikh-i-Nadiri by Mahdi Khan Astarabadi, a near-contemporary Persian chronicle of Nadir Shah's reign, and the Mughal court chronicles from Muhammad Shah's era. Essential secondary reading includes William Irvine's Later Mughals, Jadunath Sarkar's Fall of the Mughal Empire (Vol. I), and Abraham Eraly's The Mughal Throne. For UPSC-oriented preparation, consult NCERT Class XII Themes in Indian History (Part II) and Spectrum's A Brief History of Modern India.