佛說目連問戒律中五百輕重事經 2.103

2.103

問：「比丘晝眠，犯何事？」答：「開戶不得。犯墮。」

Question: "If a bhikṣu sleeps during the day, what offense does he commit?" Answer: "He may not leave the door open. [If he does,] he commits a pāyattika."