大乘起信論義記 3.408

3.408

[Section] 3. In the separate explanations, there are two parts: first, the four practices are briefly explained, and afterward, the one practice is broadly explained. Within the four there are two parts: first, revealing the marks of the four practices, and afterward, specially clarifying the expedient means for eliminating obstacles under the gate of vigor. In the first part, the four gates constitute four sections.