大乘起信論略述 2.192

2.192

論。久習淳熟至速成不退　述曰。此即勝人能入之中成得定除障不退。久習淳熟其心得住等者。此明止成入證。深伏煩惱信心等者。此顯得定入位。文易可知。無煩更解。

[Treatise:] When practiced for a long time and thoroughly mature ... swiftly accomplish non-retrogression. [Exposition:] This is, within the superior persons who are able to enter, accomplishing samādhi, removing obstacles, and reaching non-retrogression. "When practiced for a long time and thoroughly mature, one's mind can abide," etc., clarifies the accomplishment of calm and the entry into realization. "Deeply subduing afflictions, faith [becomes firm]," etc., clarifies attaining samādhi and entering the stages. The text is clear and readily understandable; there is no need for further explanation.