The battle of al-Jassora (Egyptian Arabic: معركة الجسورة) took place on 18 June 1280 in the al-Jassora region in Syria between the Egyptian army led by Emir Alam al-Din Sanjar and a Levantine army led by Sunqur al-Ashqar, the ruler in the name of al-Malik al-Kamil, supported by the Arab princes Shihab al-Din ibn Hajji and Sharaf al-Din ibn Muhanna.

When Qalawun learned of the entry of the Levantine forces into Gaza, he ordered the Egyptian army to go out to fight the Levantine army and pursue it into its homeland in Damascus and put down the attempt to secede the Levant from the Mamluk Sultanate of Egypt.

The people of Damascus were reassured and opened the doors, and no case of looting or any case of aggression was recorded by the Egyptian forces towards the people of Damascus, which makes it clear that the conflict was with Sunqur al-Ashqar as a person, and whoever followed him.

Then 3,000 Egyptian soldiers went to arrest Sunqur al-Ashqar and the princes loyal to him and those who were still with him, and with them a decree from the Sultan of Egypt of safety for whoever would hand over themselves for justice.

Sultan al-Mansur Qalawun was very happy and ordered the decoration of Cairo and the major Egyptian cities.