In the year nine—489 AH—the first appearance of the Franks in greater Syria took place. They crossed the Sea of Constantinople with a vast host; the kings were alarmed and the danger grew grave, above all for the son of Qutulmush, the ruler of Rūm. He confronted them, and they crushed him.
Ibn al-Athīr (1) states: “The beginning of their state was in the year (478). They captured Toledo and other cities, then Sicily, and they took part of Ifriqiya. Their king Baldwin mustered an army and sent word to Roger, the lord of Sicily: ‘I am coming to join you so that we may open Ifriqiya.’ Roger replied, ‘The first priority is to conquer Jerusalem.’ Thus they headed for Syria.”
It is also said that when the ruler of Egypt saw the strength of the Seljuk family and their seizure of the domains, he corresponded with the Franks. They passed by Baysīs and laid siege to Antioch. Its governor, Yāghī Bāsān (2), grew fearful, so he expelled the local Christians to the moat and confined them there. The siege lasted nine months, during which the Franks perished in great numbers, slain and dying. They then negotiated with the chief armorer, bribed him with money, and he exposed his body to them (3). They opened a small window, and five hundred of them climbed through it by night. Yāghī Bāsān opened the gate and fled, and the city was plundered—verily to Allah we belong—in the year one and ninety, 491 AH. Yāghī Bāsān’s power collapsed in grief; his retainers scattered, and an Armenian woodcutter (4) slaughtered him.
Next they took Maʿarra, where they killed and enslaved. The armies of Mosul and other regions gathered and engaged them, but the Muslims were routed and thousands were martyred.