Heraclius

هرقل

c. 575 CE – 11 February 641 CE · 23 Safar 20 AH† †

† Hijri date derived by computation from the Gregorian/Julian date; it may differ from the transmitted date by a day or two.

Byzantine emperor (610–641) who reconquered Jerusalem from Persia and then watched the Muslim conquest of Syria. The tradition preserves a letter from the Prophet ﷺ and an audience in which Heraclius questioned Abu Sufyan.

Depth

At a glance

Roles
Ruler
Era
The Prophetic Era · The Rashidun Caliphate
Region
Levant & Iraq · Anatolia
Identifiers
Wikidata
Review
Draft Completeness 2/5 · Help complete it

Life in time

500525550575600625650675700725 c. c. c. c. c. c.
Pre-Islamic Arabia · The Prophetic Era · The Rashidun Caliphate · The Umayyad Period Contemporaries: al-Abbas ibn Abd al-Muttalib · Abdullah ibn Salam · Abu Sufyan ibn Harb · Amr ibn al-As · Halima al-Sa'diyya

Islam and ChristianityWars and campaigns

Place in the story

Christian (documented)

Roles are dated and sourced; the museum describes the act and attributes the judgement.

Brief

Heraclius was emperor of Byzantium from 610 to 641 — the victor who took Jerusalem back from Persia, then lived to see Syria fall to the armies of a faith born during his reign.

Life

Heraclius came to the throne of an empire on the edge: the Sasanians had taken Syria, Egypt and — in 614 — Jerusalem itself, carrying off the relic of the True Cross. In a six-year counter-invasion he broke the Persian Empire and restored the Cross to Jerusalem in 629 1.

In those same years, the hadith tradition preserves, a letter arrived from a prophet in Arabia summoning him to Islam. Heraclius is shown questioning the merchant Abu Sufyan — then still an opponent of Muhammad — and concluding that what he described bore the marks of prophecy 2. Whether the audience happened as told is debated; what is certain is that within a decade his armies met the Muslims and lost Syria 1.

He died in February 641, having won the greatest war of his century — and lost the peace to a force no strategist had planned for.

Legacy

In the Muslim sources Heraclius is the honest foreign examiner: the ruler who asked careful questions and saw the answer clearly. In Byzantine memory, the tragic emperor who rebuilt and lost.

For young visitors

The most powerful Christian emperor of his time received a letter from a prophet in Arabia — and asked about him so carefully that he understood before most of Arabia did.

Connections

Explore the connections

Ruler of
The Byzantine Empire
Corresponded with
Muhammad
Fought
The Sasanian Empire
Participated in
The Battle of Ajnadayn· The Battle of Fihl· The Battle of Marj al-Suffar· Battle of the Yarmuk· The Conquest of Alexandria

People and things also explored

The Conquest of Syria· Khalid ibn al-Walid· Khosrow II· Ikrima ibn Abi Jahl· Abu Ubayda ibn al-Jarrah· Amr ibn al-As· Amir ibn Abi Waqqas· The Second Abyssinian Occupation of Yemen

Sources

  1. Kaegi, Heraclius, Emperor of Byzantium (2003)
  2. Ibn Sa'd, Kitab al-Tabaqat al-Kabir (Bewley translation, Ta-Ha)
  • Muqaddimat Ibn Khaldun
Cite this page

islam.museum contributors. “Heraclius”. islam.museum, https://islam.museum/en/person/heraclius/. CC BY-SA 4.0. Last updated 2026-10-19.

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Wing

People

Prophets, companions, scholars, rulers, scientists, poets, travelers: women and men who shaped the story.
Related

The Conquest of Syria

In al-Baladhuri: when Abu Bakr finished with the apostates he dispatched the armies to Syria, binding three banners — for Khalid ibn Sa'id (whom he deposed), Shurahbil ibn Hasana and Amr ibn al-As — directing them and Yazid ibn Abi Sufyan by the Ayla and Tabuk roads until their number completed at twenty-four thousand; their first fighting came at Dathin and al-Araba, and al-Waqidi's account assigns Amr Filastin, Shurahbil al-Urdunn and Yazid Dimashq; Khalid ibn al-Walid then marched from Iraq reaching them in Rabi' al-Akhir year 13, and they made him commander in every battle; the great battle of Ajnadayn fell on Monday twelve nights remaining of Jumada I year 13, Busra fell by treaty, Shurahbil conquered al-Urdunn by force save Tabariyya, the battle of Fihl came five months into Umar's caliphate with Abu Ubayda ibn al-Jarrah commanding by Umar's investiture, the day of Marj al-Suffar at the new moon of al-Muharram year 14, and then the conquest of Damascus and Bayt al-Maqdis.