俱舍論記 27.141

27.141

「非唯化主至持令久住」者，釋第十一、第十二句。初解化骨瑣身令久時住。既言留化身，明非本身骨。第二解可知。迦葉波，此云飲光。前解為正，故《婆沙》一百三十五云「有說有留化事，有說無留化事。如是說者，有留化事，是故大迦葉波已入涅槃。」

"Not only does the creator of the transformation [...] up to maintain it to abide for a long time": This explains the eleventh and twelfth lines. The first explanation is that one transforms a body of chained bones to make it abide for a long time. Since it says "retains the transformed body," it is clear that they are not the bones of his own body. The second explanation is understandable. Kāśyapa is translated here as Yinguang (Drinker of Light). The former explanation is correct; hence the Mahāvibhāṣā, fascicle 135, says: "Some say there is the retention of transformed things; some say there is no retention of transformed things. The correct view is: there is the retention of transformed things, and this is why Mahākāśyapa has already entered nirvāṇa."