俱舍論頌疏論本 9.18

9.18

釋曰：此兩行頌是第十一入胎門。一切入胎不過四位，一於入正知者，一入胎位也。唯知入胎，不知住、出。

Explanation: These two lines of verse are the eleventh topic, on entry into the womb. All entries into the womb do not exceed four states. "One is conscious at entry" is the first state of womb entry. One is conscious only of entering the womb, and is not conscious of staying or leaving.