俱舍論記 9.51

9.51

「頌曰至如次四餘生」者，答。初頌明四種入胎三時差別，後頌約人釋四。

[On the passage] 'The verse says... in order the four, other births': the answer. The first verse clarifies the differences in the three times among the four ways of entering the womb; the latter verse explains the four in terms of persons.