大般涅槃經義記 2.58

2.58

第四彼聞奉行喻中，「王答：汝求不足言」者，明堪斷我，此亦是其根性中語。對後化人，名初受小。為不足言，尋為宣令一切國等順教斷我，為藥斬首，舉過勸斷。上來四段合為第一正破邪義。下授正法。「以種種味和合藥」者，謂無常苦無我等味合之為治。「以療眾病無不差」者，用治眾惑，無不滅也。

In the fourth [section], the parable of hearing and reverently practicing: 'The king replied: What you ask is not worth mentioning' clarifies that he was capable of cutting off [the notion of] self; this is also a statement about his inherent capacity. In contrast to those transformed later, this is termed the initial receipt of the Small [Vehicle]. Because it was 'not worth mentioning,' he immediately proclaimed a decree that the entire country should follow the teaching and eradicate [the notion of] self, and that for taking the medicine one would be beheaded—pointing out the fault to encourage its eradication. The four sections above combine to form the first [part], directly refuting heterodox principles. Next is the bestowing of the correct Dharma. 'Compounding medicines with various flavors' means combining the flavors of impermanence, suffering, non-self, and so forth to serve as the remedy. 'To treat the various illnesses, none failing to be cured' means that by using them to treat the manifold defilements, none fails to be eliminated.