Natyashastra
पादस्य पतनं तज्ज्ञैः खेदनं तद्भवेत्स्त्रियाः । सयौवनानां नारीणामेवं कार्या गतिर्बुधैः ॥ १८५॥
The fall of the foot, according to experts, should be made to express a sense of effort or strain; in this way, the Gait of young women in their prime should be represented by the wise.
english translation
pAdasya patanaM tajjJaiH khedanaM tadbhavetstriyAH । sayauvanAnAM nArINAmevaM kAryA gatirbudhaiH ॥ 185॥
hk transliteration by Sanscript