俱舍論記 25.19

25.19

「如是六種至五從果非先」者，此即第三明從姓、果退。問：如是六種阿羅漢中，誰從何退？為從姓退？為從果退？問及頌答。

Regarding "Among these six kinds ... five from the fruit, not originally": this is the third [topic], clarifying falling away from lineage and fruit. Question: Among these six kinds of arhats, who falls away from what? Is it falling away from lineage, or falling away from the fruit? The question and the answer in verse.