大乘起信論義記 1.130

1.130

問：真如是不起門，但示於體者；生滅是起動門，應唯示於相用？答：真如是不起門，不起不必由起立，由無有起故，所以唯示體。生滅是起動門，起必賴不起，起含不起，故起中具三大。餘如下說。釋法畢竟。

Question: If tathatā is the non-arising gate and only reveals the essence, then arising and ceasing is the active gate, so should it not only reveal the marks and function? Answer: Tathatā is the non-arising gate; the non-arising does not necessarily depend on the active to be established. Because there is no activity, it only reveals the essence. Arising and ceasing is the active gate; the active necessarily relies on the non-arising, and the active contains the non-arising; therefore, within activity the three greatnesses are fully present. The rest is as explained below. The explanation of the Dharma is concluded.