大般涅槃經義記 6.320

6.320

自下第二佛為說法，除滅王罪。於中如來先勅許說，下正說之。說中有三：一教事觀生王愧心；二「自我招殃造茲重」下破遣罪相，去王執心；三「譬如涅槃非有無」下明罪實性，令王觀入正滅王罪。

From here below is the second [major division]: the Buddha expounds the Dharma for him to eradicate the king's sins. In this, the Tathāgata first gives permission to speak, and below expounds it properly. In the exposition there are three parts: first, he teaches contemplation of phenomena to generate a sense of shame in the king; second, from "I brought calamity upon myself by committing these grave [evils]" onward, he dismantles and dispels the marks of sin to remove the king's clinging mind; third, from "just as nirvāṇa is neither existent nor non-existent" onward, he clarifies the true nature of sin, causing the king to contemplate and enter it, properly eradicating the king's sins.