俱舍論記 14.185

14.185

「又一切聖至量無定故」者，通第三經生不犯證。以諸聖者具慚羞故，又復自恐失正念故，故諸聖者皆不飲酒，少亦不飲。以如毒藥量無定故，非為性罪聖人不飲。故《婆沙》一百二十三云「有餘師說：聖者經生必不飲酒。雖嬰咳位，養母以指強渧口中，不自在故而無有失。纔有識別，設遇強緣，為護身命亦終不飲，故遮罪中獨立酒戒。」

[On the phrase,] "Furthermore, all noble ones [...] because the amount is not fixed": This resolves the third proof: not committing it across lifetimes. Because all noble ones possess shame and modesty, and moreover themselves fear losing mindfulness, all noble ones do not drink liquor, not drinking even a little. Because, like poison, the amount is variable, it is not because it is a natural offense that the noble ones do not drink it. Thus Mahāvibhāṣā 123 states: "Other masters say: A noble one across lifetimes definitely does not drink liquor. Even in infancy, when a wet-nurse forces drops into their mouth with her finger, because they are not self-determined, there is no fault. As soon as they have discernment, even if they encounter forceful conditions, in order to protect life and limb they ultimately will not drink; therefore, among prescriptive offenses, the liquor precept is established alone."