Natyashastra
नानाभिनयसम्बद्धान्भावयन्ति रसानिमान् । यस्मातस्मादमी भावा विज्ञेया नाट्ययोक्तृभिः ॥ ३॥
As they cause the Sentiments relating to various kinds of Histrionic Representation to pervade [the heart of spectators], they are called bhāva (States) by those who produce a drama.
english translation
nAnAbhinayasambaddhAnbhAvayanti rasAnimAn । yasmAtasmAdamI bhAvA vijJeyA nATyayoktRbhiH ॥ 3॥
hk transliteration by Sanscript