大乘起信論義記 3.408

3.408

○第三別解中二：初、四行略明，後、一行廣說。四中二：初、顯四行相，後、別就進門明除障方便。初中四門即四分。

[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.