佛說觀佛三昧海經 4.21

4.21

"At that time, all the vessels flow into one another, leaving only water; wherever the water reaches, the fire is immediately extinguished. At that moment, water flows from each of the practitioner’s joints like someone shooting arrows upward. When the water reaches the boundary of Brahmā, stream after stream follows successively until it reaches the Brahmā Heaven. One sees the water within the body like the four great oceans, seeing only the worms with crushed and drooping heads, broken hands, and twisted feet. From the heart alone fire arises, dividing into ten branches. The fire enters into the waters without mutual extinction; the light of water rushes upward, followed by the light of fire. Both lights of water and fire emerge from the heart, intersecting with each other, reaching up to the peak of the three realms and down to the Avīci hell. Extending to the very limit of a world, one sees solely streams of water and fire, with the fire also running toward the east, west, south, and north.