法苑珠林 23.93

23.93

復有四法。一不自輕身。二不輕聽者。三不輕所說。四不為利養。又文殊師利問經云。文殊師利白佛言。四眾於何時中不得作聲。或身口木石及諸餘聲。

There are another four dharmas: first, not slighting oneself; second, not slighting the listeners; third, not slighting what is expounded; fourth, not acting for the sake of material gain and support. Furthermore, the Sūtra of Mañjuśrī's Inquiries states: Mañjuśrī addressed the Buddha, saying: “At what times must the fourfold assembly not make sound, whether from body, speech, wood, stone, or any other sound?”