अशृण्वतां चतुर्विंशतिपणो दण्डः ततोऽर्धमब्रुवाणानाम् ॥ कZ_०३.११.४९ ॥
aśṛṇvatāṃ caturviṃśatipaṇo daṇḍaḥ tato'rdhamabruvāṇānām
Those who do not listen (when required in testimony) are fined 24 paṇas; those who do not speak or answer are fined half of that.
They enforce courtroom discipline and ensure testimony is actually received, preventing delay and evidentiary sabotage.