請觀音經疏闡義鈔 2.13

2.13

「引例云云」者，他經為例，如向引文。若的約今經，則以舍離病苦為由，月蓋請佛為述。

Regarding “Citing examples and so on”: other sūtras serve as examples, as in the texts cited earlier. If restricted specifically to the present sūtra, the painful sickness of Vaiśālī is the origin, and Candraprabha's request to the Buddha is the narration.