俱舍論頌疏論本 9.22

9.22

前三種入胎謂輪王二佛者，約人以配也。第一入胎謂轉輪王，於入胎時無倒想解，正知入胎，不知住、出。第二入胎謂獨勝覺，於入胎位正知入、住，不知出位。第三入胎謂無上覺，入、住、出位皆能正知。言二佛者，獨覺、大覺也。

"The first three kinds of womb entry are the wheel-turning king and the two Buddhas" matches them according to persons. The first womb entry refers to the wheel-turning king: at the time of entering the womb he is without inverted conceptions, consciously entering the womb, but unconscious of staying and leaving. The second womb entry refers to the solitary realiser: in the state of womb entry he consciously enters and stays, but is unconscious of the state of leaving. The third womb entry refers to the Unsurpassed Awakened One: in the states of entering, staying, and leaving, he is able to be conscious of all. What is called the "two Buddhas" means the solitary Buddha and the Great Buddha.