Natyashastra
नरस्वभावमुत्सृज्य स्त्रीगतिं तत्र योजयेत् । विपर्ययः प्रयोक्तव्यः पुरुषस्त्रीनपुंसके ॥ १९५॥
Abandoning the natural (original) character of a man, the feminine gait should be applied in such a case. The appropriate reversal of gait should be represented when a man, woman, or hermaphrodite changes role.
english translation
narasvabhAvamutsRjya strIgatiM tatra yojayet । viparyayaH prayoktavyaH puruSastrInapuMsake ॥ 195॥
hk transliteration by Sanscript