Natyashastra
प्रवेपितशरीरश्च शुष्कोष्ठस्स्खलितं व्रजेत् । एषानुकरणे कार्या तर्जने त्रासने तथा ॥ ७३॥
The body is to be moved hurriedly, with dry lips and a stumbling gait. This is to be done in imitation and in frightening others as well.
english translation
pravepitazarIrazca zuSkoSThasskhalitaM vrajet । eSAnukaraNe kAryA tarjane trAsane tathA ॥ 73॥
hk transliteration by Sanscript