四分律刪繁補闕行事鈔 3.449

3.449

獨宿三緣：一離申手外宿，不問俗僧兩處。兩處置床，在申手內，互相檢校，方能離過。若本在申手內，後因睡相離者，不犯；本作離意，隨轉側，犯。故文云：若舒手不相及，隨轉，一一僧殘。《僧祇》：當在申手內，一夜中，三度以手相尋，不得一時頓三；當初中後夜，各一度相尋。《五分》：若在不相及處，初中後夜，偷蘭；明相出，僧殘。二無緣，除命、梵、樂靜等。三隨臥，一一結。

Staying overnight alone has three conditions: first, staying overnight beyond the reach of an outstretched hand, regardless of whether among laity or the saṃgha. Setting beds in two places within the reach of an outstretched hand so that they can supervise each other is what enables avoidance of fault. If originally within the reach of an outstretched hand, but later separated due to sleep, there is no offense; if one originally had the intention to separate, with each turning over [in bed], an offense is committed. Hence the text says: If stretching out hands they do not reach each other, with each turn, each is a saṃghāvaśeṣa. The Mahāsāṃghika-vinaya states: They must be within the reach of an outstretched hand, and during one night, search for each other with their hands three times; they must not do it three times all at once; in the first, middle, and last watches of the night, they must search for each other once in each watch. The Pañcavargika-vinaya states: If in a place where they cannot reach each other, in the first, middle, and last watches, it is a thullaccaya; when daybreak appears, it is a saṃghāvaśeṣa. Second, having no justifying circumstances, except [threats to] life, pure conduct, delight in quietude, and so on. Third, with each lying down, each [offense] is charged.