Natyashastra
सात्त्वतीं कैशिकीं चैव वृत्तिमेषां समाश्रिता । भवेत् प्र्योगो नाट्येऽत्र स तु कार्यः प्रयोक्तृभिः ॥ ४३॥
The Satvata and Kaishiki styles, when adopted, will be the basis for the performance in the drama, and they will be employed as a part of the work by the practitioners.
english translation
sAttvatIM kaizikIM caiva vRttimeSAM samAzritA । bhavet pryogo nATye'tra sa tu kAryaH prayoktRbhiH ॥ 43॥
hk transliteration by Sanscript