大比丘三千威儀 1.29

1.29

臥起欲出戶有五事：一者起下床不得使床有聲；二者著履先當抖擻；三者正住著法衣；四者欲開戶先三彈指，不得使戶有聲；五者戶中有佛像不得背出，當還向戶而出，出不得住與人言。

When rising from sleep and wishing to go out the door, there are five matters: first, when rising and getting down from the bed, one must not cause the bed to make a sound; second, when putting on shoes, one must first shake them out; third, standing upright, one puts on the Dharma robes; fourth, when about to open the door, one first snaps the fingers three times and must not cause the door to make a sound; fifth, if there is a Buddha image inside the room, one must not turn one's back to it when exiting, but should face back toward the room to exit, and upon exiting, one must not stand still and converse with people.