Natyashastra
भुजङ्गत्रासितं सव्यं तथा वैशाखरेचितम् । आक्षिप्तकं ततः कृत्वा परिच्छिन्नं तथैव च ॥ १९५॥
The left hand is made to resemble a serpent's fright, and the right hand is bent like the Vaiśākha. After performing the drawn-in gesture, the cut-off gesture is then made.
english translation
bhujaGgatrAsitaM savyaM tathA vaizAkharecitam । AkSiptakaM tataH kRtvA paricchinnaM tathaiva ca ॥ 195॥
hk transliteration by Sanscript