四分律行事鈔資持記 3.981

3.981

三中，初令相攝。應下，次為說法。髮毛等者，令觀不淨；虛幻不實，即能厭患生死故。有下，明說之所以。曾觀，謂宿習也。癰蓮喻機，剌日比法。然而說法，當須量機；隨時用捨，不必專此；據本，和尚為說，今多闍梨耳。

In the third part, first making them accept each other. Below, 'Should...': next, preaching the Dharma for him. 'Hair, body hair, etc.' makes him contemplate impurity; being illusory and unreal, he can thus feel revulsion toward birth and death. Below, 'There are...': clarifying the reason for preaching. 'Having previously contemplated' refers to past habitual practice. The ulcer and the lotus are metaphors for capacity; the thorn and the sun are analogies for the Dharma. However, in preaching the Dharma, one must assess the capacity; adapting to circumstances by adopting or setting aside, one need not adhere exclusively to this. According to the original text, the upādhyāya preaches it; nowadays it is mostly the ācārya.