二諦義 2.18

2.18

問曰：若為一名有無量義耶？解云：就四義解之。一隨名釋、二就因緣釋、三顯道釋、四無方釋。隨名釋者，如俗以浮虛為義，又俗以風俗為義。然此具出內外，故律有國土毘尼，隨國土處所，風俗不同也。《禮記》云「君子行禮，不求變俗。」故風俗為義也。從來唯得前釋，無有後解也。

Question: How does one name have immeasurable meanings? Explanation: It is explained in terms of four meanings: first, explaining according to the name; second, explaining with reference to causes and conditions; third, explaining by revealing the Way; fourth, explaining without fixed direction. Explaining according to the name: as conventional taking insubstantiality as its meaning, and conventional also taking custom as its meaning. This [second meaning] is fully found in both internal and external [teachings]; therefore, the Vinaya has country-vinaya: according to the place and country, customs differ. The Book of Rites says: "The gentleman conducts rites without seeking to change customs." Therefore, custom is its meaning. Heretofore, only the former explanation was grasped, and the latter understanding was absent.