俱舍論記 14.183

14.183

「對法諸師至犯性罪故」者，此下對法諸師通前四證。此即通第一除飲酒性罪證。言飲諸酒非是性罪，然為病者唯除性罪、總開遮戒。此即許飲，明非性罪。若是性罪，不應佛開。復於異時遮飲酒者，染疾釋種性不能飲，為防因此犯性罪故，故佛遮飲。

[On the phrase,] "The Abhidharma masters [...] because of committing a natural offense": From here down, the Abhidharma masters resolve the preceding four proofs. This resolves the first proof: the exclusion of drinking liquor among natural offenses. They say that drinking various liquors is not a natural offense, but for the sick, [the Buddha] only excluded natural offenses while generally permitting prescriptive precepts. This actually permits drinking, which clarifies that it is not a natural offense. If it were a natural offense, the Buddha would not have permitted it. As for prohibiting drinking liquor at another time, the Śākyan who contracted illness had an innate inability to drink, and in order to prevent committing a natural offense because of this, the Buddha prohibited drinking.