What did the quetzalcoatl promise as he left tula in 999 AD?

As Quetzalcoatl departed from Tula around 999 AD, he promised to return one day to bring renewal and prosperity to his people. His departure was marked by a vow that he would come back to restore order and civilization, highlighting his role as a deity associated with wisdom, culture, and the arts. This promise of return deeply influenced later Mesoamerican cultures and their beliefs about the arrival of a benevolent figure.