The Long Āgama Sūtra 4.25

4.25

「又告諸天：『過去諸沙門、婆羅門以無數方便，現無量神足，皆由四神足起；正使當來沙門、婆羅門無數方便，現無量神足，亦皆由是四神足起；如今現在沙門、婆羅門無數方便，現無量神足者，亦皆由是四神足起。』時，梵童子即自變化形為三十三身，與三十三天一一同坐，而告之曰：『汝今見我神變力不？』答曰：『唯然已見。』梵童子曰：『我亦修四神足故，能如是無數變化。』

“‘He also told the gods, “Ascetics and priests in the past used countless methods and displayed measureless miraculous abilities that arose from these four bases of miraculous power. Even future ascetics and priests will use countless methods and display measureless miraculous abilities that will also arise from these four bases of miraculous power. They’re like ascetics and priests of the present who use countless methods and display measureless spiritual abilities that also arise from these four bases of miraculous power.”

“‘Brahmā Kumāra then transformed his shape into thirty-three bodies, which sat with each of the Trāyastriṃśa gods, and each said, “Now, do you see my powers of transformation?”

“‘The gods answered, “Yes, we see them.”

“‘Brahmā Kumāra said, “I’m capable of such countless transformations because I’ve cultivated these four bases of miraculous power, too.”