Natyashastra
नृत्तेऽभिनययोगे वा पाणिभिर्वर्तनाश्रये । मुखभ्रुनेत्रयुक्तानि करणानि प्रयोजयेत् ॥ २२०॥
Hand gestures in their [various] movements when applied in drama and dance should he followed by Karaṇas having [appropriate expression of] the face, the eyebrows and the eyes.
english translation
nRtte'bhinayayoge vA pANibhirvartanAzraye । mukhabhrunetrayuktAni karaNAni prayojayet ॥ 220॥
hk transliteration by Sanscript