大乘起信論略述 2.142

2.142

[Treatise:] Through perceiving the dharmakāya... entering nirvāṇa.
[Exposition:] This reveals the virtue of benefiting others. In accordance with the original aspiration and vow to benefit sentient beings, they can manifest the eight phases, provisionally acting as the Buddha body. Through the eight phases of attaining awakening, they perform the activities of sentient beings.