fter the Buddha returned to his father's kingdom, uncertainty still existed about whether Gautama Buddha was really enlightened or not. In response, the Buddha displayed the Yamaka-pātihāriya or the "Twin Miracle", called so because of its simultaneous production of apparently contradictory phenomena; in this case, fire and water.
The twin miracle entailed Gautama Buddha producing flames from the upper part of his body and streams of water from the lower part of his body, alternating this, and doing similarly between the left and right sides of his body.
Afterwards, the Buddha took three giant steps, arriving in Tavatimsa. There, he preached the Abhidharma to his mother who had been reborn there as a Deva named Santussita.