大乘起信論廣釋卷第三．四．五 5.37

5.37

論。但隨眾生至亦有差別　釋曰。此應機殊用德也。此中有難。若皆平等。何故經說所行別耶。故此答言。但隨等也。眾生不同。謂前怯懈　或貪嗔等增及等分世界不同。謂諸佛土所作佛事皆不同故。根謂善根。有上中下。欲謂樂欲有速中鈍。性謂種姓。有劣中勝。所見所聞皆有異故。菩薩身行不可同也。

[Treatise:] It is only in accordance with sentient beings […] there are also differences.
[Commentary:] This is the virtue of distinct applications according with capacities. Here there is an objection: If all are equal, why do the sūtras speak of differences in what is practiced? Thus this answers: "It is only in accordance with […]". Sentient beings are not uniform, referring to the aforementioned timidity and laxity, or the increase and equal parts of greed, anger, and so on. Worlds are not uniform, referring to the fact that the Buddha-work done in the Buddha-lands is in all cases not uniform. "Faculties" refers to wholesome roots, which have superior, middling, and inferior. "Desires" refers to wishes and aspirations, which have swift, middling, and dull. "Natures" refers to gotras, which have inferior, middling, and superior. Because what is seen and heard are all distinct, the bodily practices of bodhisattvas cannot be identical.