大方廣佛華嚴經隨疏演義鈔 43.42

43.42

疏「有深功德為難行」者，《瑜伽》難行精進有三：若諸菩薩無間遠離諸衣服想、諸飲食想、諸臥具想及己身想，於諸善法無間修習曾無懈怠，是名第一難行精進。若諸菩薩如是精進盡眾同分，於一切時曾無懈廢，是名第二難行精進。若諸菩薩平等通達功德相應，不緩不急無有顛倒，能引義利精進成就，是名第三難行精進。今文具三，長劫不懈況盡壽耶即是第二，一念不悔即亡身無間即是第一，自慶已下即第三。前行初離過，亦此第一。

Regarding the commentary's phrase “possessing profound merit is difficult practice”: the *Yogācāra[-bhūmi]* has three kinds of diligence of difficult practice: If bodhisattvas continuously separate from all notions of clothing, notions of food and drink, notions of bedding, and notions of their own bodies, and uninterruptedly cultivate wholesome dharmas without ever being lax, this is named the first diligence of difficult practice. If bodhisattvas carry out such diligence to the end of their life-span (nikāya-sabhāga), at all times without ever becoming lax or neglectful, this is named the second diligence of difficult practice. If bodhisattvas equally and thoroughly penetrate what corresponds to merit, being neither lax nor hurried, free from inverted views, and accomplishing diligence that can bring about benefit, this is named the third diligence of difficult practice. The present text contains all three: not being lax for long kalpas, how much more so for one's whole life, which is the second; not regretting for a single thought, that is, uninterruptedly letting go of the body, which is the first; and from “rejoicing in oneself” onward, which is the third. In the previous practice, the initial separation from faults is also this first [diligence].