What is "abhiyaza"

Abhiyaza ( ; d. 825 BCE) was the legendary founder of the Kingdom of Tagaung, and that of Burmese monarchy, according to the 19th century chronicle Hmannan Yazawin. He reportedly belonged to the same Sakya clan of the Buddha. However, prior Burmese chronicles down to the 18th century trace the origin of the monarchy to another legendary figure Pyusawhti, a descendant of a solar spirit and a dragon princess. Scholars view the Abhiyaza story as an attempt by the chroniclers of Hmannan to move away from then prevailing pre-Buddhist origin narrative of the monarchy.