I have heard that on one occasion the Blessed One was staying near Sāvatthī at Jeta's Grove, Anāthapiṇḍika's monastery. There he addressed the monks, "Monks!"
"Yes, lord," the monks responded to him.
The Blessed One said, "When Dabba Mallaputta rose up into the air and, sitting cross-legged in the sky, in space, entered & emerged from the fire property and was totally unbound, his body burned and was consumed so that neither ashes nor soot could be discerned. Just as when ghee or oil is burned and consumed, neither ashes nor soot can be discerned, in the same way, when Dabba Mallaputta rose up into the air and, sitting cross-legged in the sky, in space, entered & emerged from the fire property and was totally unbound, his body burned and was consumed so that neither ashes nor soot could be discerned."
Then, on realizing the significance of that, the Blessed One on that occasion exclaimed: