[2] Abu Zayd, who had converted to Christianity, fled the city and became a vassal of the Aragonese king, James I.
The dethroned monarch provided James I with the perfect casus belli to invade and conquer Valencia, a process that was completed in the year 1238.
Zayyan personally commanded troops various battles throughout the campaign, including the Siege of Burriana and the Battle of the Puig, where the Muslim troops were decisively defeated, marking the inevitability of the Aragonese take over.
The Muslim hand was forced into surrender due to a lack of aid that was expected from the Sultan of Tunisia.
In the accords of the capitulation, Zayyan promised James I that he and his entourage would go into exile from Valencian land via the port at Cullera to Tunisia where he would eventually die.