How a single night of festivities led to the fall of ancient Damascus
In 634, the Rashidun Caliphate laid siege to Damascus, a city protected by massive walls. While the Byzantine commander Thomas fought to hold his ground, a local priest provided the Muslim forces with a secret path inside. The resulting surrender sparked a bitter dispute between two legendary Muslim commanders.
The siege of Damascus began on 21 August 634, marking a pivotal moment in the Muslim conquest of the Levant. The city, known as the paradise of Syria, was heavily fortified with walls 11 meters high. Khalid ibn al-Walid, the commander in chief of the Rashidun forces, isolated the city from northern reinforcements by deploying detachments along vital routes, including a position near Bait Lihya. Despite the strength of the walls, the city lacked sufficient relief, and the Byzantine commander Thomas, son-in-law of Emperor Heraclius, struggled to break the Muslim lines.
The turning point arrived on 18 September, when a priest named Jonah informed Khalid of a festival occurring within the city walls that night. Seizing the opportunity, Khalid and a small group of soldiers scaled the eastern wall, killed the guards, and opened the gate. Simultaneously, Thomas, realizing the city was compromised, negotiated a peaceful surrender with Khalid’s second in command, Abu Ubaidah ibn al-Jarrah, at the Jabiyah gate. This created a diplomatic crisis: Khalid argued he had conquered the city by force, while Abu Ubaidah insisted the terms of the peace agreement must be honored.
The commanders eventually agreed to uphold the peace, which guaranteed the safety of the citizens and their property, provided they paid the Jizya. However, the agreement included a three-day truce. Once the period expired, Khalid pursued the departing Byzantine convoy, leading to the Battle of Marj-ud-Deebaj near Antioch. Following the conquest, Damascus became the capital of Islamic Syria, eventually serving as the seat of the Umayyad Caliphate under Mu'awiya I. While the city flourished as a center of trade, it was eventually eclipsed by Baghdad after the rise of the Abbasid Caliphate in 750.
The event remains a subject of historical nuance, with some scholars, such as Burns in 2007, suggesting the siege concluded in September 635 rather than 634. The strategic importance of the city and the internal dynamics between the Rashidun commanders highlight the complex transition of power in the region during the 7th century.
Source: Siege of Damascus (634)
