Natyashastra
सगर्विता चूर्णपदा शकारस्य गतिर्भवेत् । जात्या नीचेषु योक्तव्या विलोकनपरा गतिः ॥ १५०॥
Persons of inferior birth should walk with a gaze that constantly shifts, as if watching their surroundings, while keeping their limbs withdrawn to avoid contact with others.
english translation
sagarvitA cUrNapadA zakArasya gatirbhavet । jAtyA nIceSu yoktavyA vilokanaparA gatiH ॥ 150॥
hk transliteration by Sanscript