Natyashastra

siva.sh/natyashastra/9/76

पुनरपि च भ्रमिताग्ररूपा शिलावर्तयन्त्रशैलेषु । परिवेषणे तथैव हि कार्या चाधोमुखी नित्यम् ॥ ७६॥

sanskrit

This hand moved in the front will indicate [any] form, stone, whirlpool, mechanical contrivance and a hill, and to represent the serving up of meals the same movement of the hand pointing downwards is required.

english translation

punarapi ca bhramitAgrarUpA zilAvartayantrazaileSu | pariveSaNe tathaiva hi kAryA cAdhomukhI nityam || 76||

hk transliteration by Sanscript