佛說觀佛三昧海經 1.18

1.18

"Furthermore, royal father! In Jambudvīpa and throughout the four continents, there is a garuḍa named the Pure Voice Garuḍarāja, who enjoys complete sovereignty among all birds. By the karmic retribution of this bird, it is supposed to eat nāgas. In Jambudvīpa it eats one nāgarāja and five hundred small nāgas each day; on the next day, in Pūrvavideha, it eats one nāgarāja and five hundred small nāgas; on the third day, in Aparagodānīya, it eats one nāgarāja and five hundred small nāgas; on the fourth day, in Uttarakuru, it eats one nāgarāja and five hundred small nāgas. Cycling and repeating in this way, eight thousand years pass. At that time, this bird's signs of death appear. The nāgas spit poison so that it has no way to feed. Pressed by hunger, that bird wanders anxiously seeking food but can find none at all; roaming through all the mountains, it never finds rest, until it reaches the Diamond Mountain and then temporarily pauses. From the Diamond Mountain it descends directly to the boundary of the great waters, and from the boundary of the great waters to the boundary of the wind wheel; blown by the wind, it returns to the Diamond Mountain. Having done so seven times, its life then ends. After its life has ended, on account of that poison, fires simultaneously blaze up on the ten jewel mountains.