Natyashastra
अथवा मोह्यते यस्मात्प्रयोगसूचनादिभिः । तमादुपोहनं ह्येतज्जानभा(ता)ण्डसमाश्रयम् ॥ १३२॥
Or, because it is carried forward by means of indications of performance and other cues, this too is called the Upohana, dependent on musical instruments.
english translation
athavA mohyate yasmAtprayogasUcanAdibhiH । tamAdupohanaM hyetajjAnabhA(tA)NDasamAzrayam ॥ 132॥
hk transliteration by Sanscript