俱舍論記 9.32

9.32

「雖無經論至不可思議」者，大德釋通。或有頓生、或有漸待，由貪愛故。覺悟先過去感虫身業，如從睡覺令起作用。餘文可知。

[On the passage] 'Although there is no sūtra or treatise... it is inconceivable': the Venerable explains and resolves it. Either they are born at once or they wait gradually, due to craving. Awakening the past karma that causes the insect body is like awakening from sleep to engage in activity. The rest of the text is self-evident.