俱舍論記 24.29

24.29

「無行般者至速進道故」者，無行般者，謂欲界沒往於色界，生已經久加行懈怠，不多功用便般有餘涅槃。以闕勤修、速進二道，故名無行。生已，簡異中般。經久，簡異生般。闕勤修，簡異有行。

Regarding 'One who enters parinirvāṇa without activity... path of swift progress': 'one who enters parinirvāṇa without activity' (anabhisaṃskāra-parinirvāyin) means that one dies in the desire realm and goes toward the form realm, and after being born, through passing a long time in lax preparatory practice, without much exertion, directly enters parinirvāṇa with remainder. Because they lack both paths of diligent cultivation and swift progress, they are called 'without activity'. 'Having been born' distinguishes them from the intermediate parinirvāṇa. 'Passing a long time' distinguishes them from the birth parinirvāṇa. 'Lacking diligent cultivation' distinguishes them from the active type.