大般涅槃經義記 2.6

2.6

自下第三正為宣說。於中有二：勸捨昔偽，令修今真；二「我今當令一切生」下，就真為說三事涅槃，正酬上請。前中有三：一雙奪因果，勸修今真；二「云何莊嚴正法城」下，別奪昔果，勸修今真；三「汝等雖得出家」已下，別奪昔因，勸修今真。就初段中，先奪昔偽。「我於往」下勸修今真。奪昔偽中，先明昔來所得是難，「離八難」下牒以奪之。

From here below is the third [part], directly expounding [the Dharma] for them. Within this there are two [sections]: [first,] exhorting them to abandon their past falsehood and causing them to cultivate the present truth; second, from "I shall now cause all sentient beings" downward, expounding the three aspects of nirvāṇa in terms of the truth, directly responding to the previous request. Within the first there are three: first, jointly revoking cause and effect and exhorting cultivation of the present truth; second, from "How is the castle of the true Dharma adorned?" downward, individually revoking the past effect and exhorting cultivation of the present truth; third, from "Although you have obtained ordination..." downward, individually revoking the past cause and exhorting cultivation of the present truth. In the first section, he first revokes past falsehood. From "In the past, I..." downward, he exhorts cultivation of the present truth. Within revoking past falsehood, he first clarifies that what was attained in the past was difficult; from "parting from the eight difficulties" downward, he cites this to revoke it.