Natyashastra
सोच्छ्वासैर्निःश्वसितैः सन्तापैश्चैव हृदयशून्यतया । अभिनेतव्या चिन्ता मृजाविहीनैरधृत्या च ॥ ५१॥
It is to be represented on the stage by sighing, deep breathing, agony, and absent-mindedness, giving up of cleansing [the body] and want of self-command.
english translation
socchvAsairniHzvasitaiH santApaizcaiva hRdayazUnyatayA । abhinetavyA cintA mRjAvihInairadhRtyA ca ॥ 51॥
hk transliteration by Sanscript