請觀音經疏闡義鈔 3.2

3.2

"Nong introduction": the prelude of an actor. The principal exposition is like the play, and the three introductory sections are like the prelude. "Descending" (jianglin): the Rites of Zhou states: "Lin means the superior approaching the inferior." "The purpose of the sequence": because within the sequence of causes Candraprabha extended the invitation, the Buddha indicated that the one who can remove the poisonous afflictions is in the western direction; because he showed the direction and location, he urged them to pray and request; because of the prayer and request, the sage descended; because the sage descended, he bestowed the willow branch; because the willow branch was received, he expounded the dhāraṇī for them.