Natyashastra
देवानां वचनं श्रुत्वा नारदो वाक्यमब्रवीत् । धातुवाद्याश्रयकृतं निर्गीतं मा प्रणश्यतु ॥ ३८॥
Hearing the words of the gods, Narada spoke: "The song, which is based on the principles of the elements and the support of the instruments, should not be destroyed."
english translation
devAnAM vacanaM zrutvA nArado vAkyamabravIt । dhAtuvAdyAzrayakRtaM nirgItaM mA praNazyatu ॥ 38॥
hk transliteration by Sanscript