四分律刪繁補闕行事鈔 1.309

1.309

二明不失略述五種。一非法惡心，解者不失。律云：惡心解淨地不成，例準。二僧尼互結，《善見》云：比丘於尼界上結界不失，尼同得成。三中邊不相解語，亦互重結。四失界相，如《善見》中。五空本處。《五百問》云：大僧與尼通結得，不得相叉。

Second, explaining non-loss, briefly stating five kinds: First, illegitimate dissolution with an evil mind does not cause loss. The Vinaya says: 'Dissolving the pure ground with an evil mind is ineffective'; the others follow this analogy. Second, mutual demarcation by monks and nuns. The Samantapāsādikā states: 'When a bhikṣu demarcates a boundary over a nun's boundary, it is not lost, and the nuns likewise achieve success.' Third, where central and peripheral regions do not understand each other's language, they also re-demarcate over one another. Fourth, loss of boundary markers, as in the Samantapāsādikā. Fifth, emptiness of the original place. The Wubai wen says: 'Demarcating a combined boundary between fully ordained monks and nuns is permitted, but they must not interlace.'