諸經要集 7.35

7.35

又大法炬經云。佛言。一切眾生。皆悉隨其形類而置名字。如鳥雀等。而彼餓鬼眾生之中。無有決定差別名字。勿謂天定天也。人定人也。餓鬼定餓鬼也。如一事上有種種名。如一人上有種種名。如一天上乃至餓鬼畜生有種種名。亦復如是。亦有多餓鬼。全無名字於一彈指頃。轉變身體作種種形。云何可得呼其名也。彼中惡業因緣未盡故。於一念中種種變身。

Also, the Da faju jing says: The Buddha said: “All sentient beings are assigned names according to their physical species, such as birds and sparrows. But among hungry ghost sentient beings, there are no fixed, distinct names. Do not say that devas are fixed as devas, humans are fixed as humans, and hungry ghosts are fixed as hungry ghosts. Just as there are various names for a single thing, or various names for a single person, or various names for devas down to hungry ghosts and animals, so it is in this case too. Moreover, many hungry ghosts have no name at all, and in the snap of a finger they transform their bodies into various shapes. How could one call them by name? Because the causes and conditions of their evil karma are not yet exhausted, in a single thought-moment they transform into various bodies.”