大乘起信論略述 1.114

1.114

論。云何為六至愛與不愛故　述曰。次下別釋。別釋六麁。即分為六。此初也。謂未無明不了現識。所現境相皆是自心無有體性。創起惡數分別染淨。名為分別染與不愛。

The treatise says: "What are the six? [...] pleasant and unpleasant."

The commentary says: Next below is the specific explanation. Specifically explaining the six coarse [aspects], it is divided into six. This is the first. That is to say, because of fundamental avidyā, one does not understand that the objective aspects manifested by the manifesting consciousness are entirely one's own mind and lack intrinsic reality. One initially gives rise to mental factors that discriminate defilement and purity, which is named discriminating the pleasant and unpleasant.