What helped Sultan Beybarys to capture the Israeli fortress «Safed»?

«Trails of Nomads» scientific expedition members continue their research in Israel. The team specially visited the place where the battle between the Mamluk army and the Mongol conquerors took place. What monument was erected by al-Zahir Beibarys? The Kipchak Sultan captured the fortress of Arsuf and completely destroyed all the buildings. Why did he do this? Sultan Beibarys, having changed clothes, captured the Safed citadel without a fight. What kind of dress did he wear?