The Story of Thadingyut
Thadingyut marks the descent of the Buddha from the Tushita heaven of the 33 gods where he had gone to to preach the Abhidharma for three months, including to Indra, Brahma, and his mother Maya who had been reborn there.
This 3rd century Gandhara sculpture (today at the Ashmolean museum at Oxford) shows the Gautama Buddha flanked by the Brahma and Indra descending down the triple stairway from the Trayastrimsa heaven. The nun Utpalavarna kneels in waiting below.
Gandhara was a Greek and Kushan Buddhist kingdom (from 180BC to 450AD) in what is today Afghanistan and Pakistan. The capital was at Taxila, a great centre of Buddhist learning. ("Taxila" is the origin of the Burmese word "Tekkatho", now meaning "university").