大般涅槃經義記 5.265

5.265

就七善中，文別有四：一問答總舉，「云何梵行」是其問也，「住七善法得具梵行」是其總也，以此七種順益眾生，故名為善。

Within the seven excellences, the text has four distinct parts: first, question and answer broadly introducing them: "What is pure practice?" is the question, and "abiding in the seven excellent dharmas, one attains the complete pure practice" is the broad [answer]; because these seven kinds accord with and benefit sentient beings, they are called "excellent."