藥師經疏 1.106

1.106

第六橫者入師子虎豹諸惡獸中　六逢獸。六生此人不定壽業。是食肉害眾生增上果。若遇順緣修福等資助。不為惡獸等所噉。壽命延長。如其不爾則為獸所噉。壽命短促故為橫死。

Sūtra: "The sixth untimely death is falling among lions, tigers, leopards, and various evil beasts."
Six: meeting beasts and losing life. This person's karma for lifespan is indefinite; it is the dominant result of eating meat and harming sentient beings. If they encounter supportive conditions such as cultivating merit to aid them, they will not be devoured by evil beasts and the like, and their lifespan will be prolonged. If not, they will be devoured by beasts and their lifespan will be short; therefore it is an untimely death.