Natyashastra
प्रणम्य देवताभ्यश्च ततोऽभिनयमाचरेत् । यत्राभिनेयं गीतं स्यात्तत्र वाद्यं न योजयेत् ॥ २७६॥
After bowing to the gods, she should perform the dance. Where the song is being expressed through gestures, instrumental music should not be used there.
english translation
praNamya devatAbhyazca tato'bhinayamAcaret । yatrAbhineyaM gItaM syAttatra vAdyaM na yojayet ॥ 276॥
hk transliteration by Sanscript