華嚴經探玄記 5.36

5.36

初中，何故入定者，有六意：一以此三昧是法體故、二顯非證不說故、三顯此法非思量境故、四察機審藥故、五為受佛加故、六為顯諸佛同說故。文中四：一辨入定人。何故法慧入者？是眾首故、餘入則亂眾調伏故、顯十住法慧能說故。二顯非己力。三明所得定，謂簡佛果故云菩薩，觀解善巧故云方便，即住法也。方便多端故云無量，即是十種也。四納法在心，故云正受。

In the first [part], why he enters samādhi has six reasons: 1. because this samādhi is the essence of the teaching; 2. to show that without realization it is not spoken; 3. to show that this teaching is not an object of conceptual deliberation; 4. to examine the faculties and assess the medicine; 5. in order to receive the Buddha's empowerment; 6. in order to show that all buddhas preach the same. In the text there are four: 1. distinguishing the person who enters samādhi. Why did Dharma Wisdom enter it? Because he is the head of the assembly; if others entered it, it would disrupt the assembly's taming; and to show that the ten abodes can be spoken by Dharma Wisdom. 2. Showing that it is not by his own power. 3. Clarifying the samādhi attained: to distinguish it from the buddha-fruit it says "bodhisattva"; because the contemplative understanding is skillful it says "upāya", which is the teaching of the abodes. Because the upāyas have many modes it says "immeasurable", which refers to the ten kinds. 4. Taking the teaching into the mind, hence it says "correct attainment" (samāpatti).