大般涅槃經義記 6.202

6.202

第六段中辯明菩薩於受生時正知入胎，不同世人，是故不思。於中，初先舉凡顯聖，先舉，次列，後辯其相。下明菩薩不同彼凡，為是不思。

In the sixth section, it explains that when taking birth the bodhisattva enters the womb with correct awareness, unlike worldly people, and for this reason it is inconceivable. Within this, it first adduces the ordinary to reveal the noble: first adducing, next enumerating, and then explaining their characteristics. Below, it clarifies that the bodhisattva is not like those ordinary persons, and for this reason it is inconceivable.