大乘義章 8.21

8.21

四識住義四門分別（辨相一　漏無漏分別二　就地分別三　三世分別四）

The doctrine of the four stations of consciousness (vijñāna-sthiti) is differentiated through four gates: (1. Explaining the characteristics; 2. Differentiating defiled and untainted; 3. Differentiating by level; 4. Differentiating by the three times).