大比丘三千威儀 2.95

2.95

復有五事：一者比丘僧會，不得但著結袈裟入行眾中。二者不得當講堂戶中觀僧。三者不得踞戶外聽僧語。四者不得住戶中大呼留上人。五者設講堂戶已閉，不得排開，急欲入當三彈指。

There are further five matters: first, when the bhikṣusaṅgha is assembled, one must not enter among the assembly wearing only a tied kāṣāya. Second, one must not stand in the doorway of the lecture hall observing the saṅgha. Third, one must not squat outside the doorway listening to the saṅgha's speech. Fourth, one must not stand in the doorway shouting loudly to detain senior persons. Fifth, if the door of the lecture hall is already closed, one must not push it open; if urgent and wishing to enter, one should snap the fingers three times.