金剛般若經依天親菩薩論贊略釋秦本義記卷上 1.82

1.82

經。須菩提於意云何斯陀含能作是念我得斯陀含果不　第二果中初問也。

[Sūtra:] "'Subhūti, what do you think? Can a sakṛdāgāmin form such a thought: "I have attained the fruit of a sakṛdāgāmin"?'"

This is the initial question regarding the second fruit.