法苑珠林 69.26

69.26

第十二中陰有者。以愚癡故受畜生身。無量種類。受百千億生死之身。墮於地獄餓鬼畜生。輪轉世間不可窮盡。以餘善業。畜生中死生二天處。或生四天王天。或生三十三天。於畜生惡道苦報欲盡。將得脫身則有相現。臨命終時見光明現。以餘善業癡心薄少。或見樂處即走往趣。如夢所見。走往趣之即生天上。是名第十二中陰有也。

Regarding the twelfth intermediate existence: Because of ignorance, beings receive animal bodies of immeasurable varieties, receiving bodies of birth and death for hundreds of thousands of koṭis of times, falling into the hells, hungry ghosts, and animals, transmigrating in the world without end. Through residual wholesome karma, dying among animals, they are reborn in two heavenly realms: either in the Heaven of the Four Heavenly Kings or in the Heaven of the Thirty-Three. When the painful retribution in the evil realm of animals is about to end and they are about to attain release, signs appear. When approaching the end of life, they see light appear. Through residual wholesome karma, their ignorant mind becomes faint and slight, or seeing a place of pleasure, they run towards it as if seen in a dream. Running towards it, they are instantly reborn in heaven. This is called the twelfth intermediate existence.