四分律刪繁補闕行事鈔 2.427

2.427

三期心當境。非謂對境之時，或有迷謬，境有錯誤、或無記餘緣、或睡眠不覺；並不正犯。若先作方便，後隨心三性，並結。《十誦》、《伽論》：若先作殺母方便已，自眠時，母死，是無記心，得逆及重。阿羅漢無記犯戒、若睡，覺即悔過；凡夫須準。《智論》：阿羅漢不為夢眠，但為四大故，少時息耳。

Third: aiming the mind at the appropriate object. This means that at the time of confronting the object, if there is bewilderment or error, or the object is mistaken, or there are other conditions [involving] the morally indeterminate, or sleeping without awareness, none of these constitute an actual offense. If one has previously undertaken expedients, and subsequently [the mind engages] according to any of the three natures of mind, [an offense] is indeed incurred. The Daśādhyāya-vinaya and the *Abhidharmasaṃgīti-śāstra* state: If one has first undertaken expedients to kill one's mother, and while one is asleep the mother dies, this is an indeterminate mind, yet one incurs a heinous sin and a grave [offense]. When an arhat breaks a precept with an indeterminate mind or while asleep, upon awakening he immediately repents; ordinary beings must be judged accordingly. The *Mahāprajñāpāramitopadeśa* states: An arhat does not sleep due to dreaming; it is merely for the sake of the four great elements that he rests for a short time.