大比丘三千威儀 2.91

2.91

復有五事：一者上座說經，不得從下是正。二者設有上座自共諍語，不得從下有所助。三者下座共諍語，若有所白，不得強呵止。四者摩波利來前，有所白使行，上座者即當起下床坐，當言諾。五者不得言上座某次當行，下座某常示，為我前自以作某。

There are further five matters: first, when a sthavira expounds the scriptures, one must not correct him from below. Second, if sthaviras dispute among themselves, one must not assist either from below. Third, when junior monks dispute among themselves or make a report, one must not forcibly rebuke and stop them. Fourth, when the vihārapāla comes forward with a report sending someone on an errand, a sthavira should immediately rise, step down from the seat, and say, 'Yes.' Fifth, one must not say: 'It is sthavira so-and-so's turn to go; junior monk so-and-so is constantly being assigned, but earlier I did such-and-such myself.'