Natyashastra
विघूर्णितशरीरा च करैः प्रस्खलितैस्तथा । उन्मत्तस्यापि कर्तव्या गतिस्त्वनियतक्रमा ॥ १२३॥
With a body swaying and hands faltering, the gait of a lunatic should be made with irregular movements.
english translation
vighUrNitazarIrA ca karaiH praskhalitaistathA । unmattasyApi kartavyA gatistvaniyatakramA ॥ 123॥
hk transliteration by Sanscript