俱舍論疏 10.254

10.254

論「彼後或隨至不名正定」，答也。此有四釋：一或後時墮邪定故、二得涅槃時未定故、三非如預流極七返有等、四彼未能捨邪性故。

On the passage in the treatise from "They may subsequently follow" to "are not called correctly determined": this answers. Here there are four explanations: first, because at a later time they may fall into wrong determination; second, because the time of attaining nirvāṇa is not yet fixed; third, because unlike a stream-enterer (srotāpanna), their existences are not limited to seven returns at most; fourth, because they are not yet able to abandon wrong nature.