成唯識論述記 2.598

2.598

述曰：分別相麁，麁觀能斷，行相猛故，下道能除，故入初地即斷除之。一心而論，准我中說。若三心者，二心斷名初，第三道除，望修道為初故，如《樞要》說，或頓，或漸，至下當知。

The Commentary states: The marks of discrimination are coarse, and a coarse contemplation can sever them; because their mental mode (ākāra) is fierce, an inferior path can eliminate them. Therefore, upon entering the first bhūmi, they are severed and eliminated immediately. If discussed in terms of a single mind, it conforms to what was said regarding the self. If in terms of three minds, the two minds of severance are called the beginning, and the path of the third [mind] eliminates them; viewed in relation to the path of cultivation (bhāvanāmārga), it is considered the beginning, as explained in the Cheng weishi lun shuyao; whether sudden or gradual will be known below.