Kamasutra
पुटापुटयोगैर्वा नष्टच्छायारूपः ॥ २४ ॥
He may also make himself visible or invisible by the methods of Putaputa Yoga, and circulate without his shadow being seen.
english translation
अथवा पुट और अपुर के योग से अपनी छाया और रूप को लुप्त करके अन्तःपुर में जाया जा सकता है ॥ २४ ॥
hindi translation
puTApuTayogairvA naSTacchAyArUpaH ॥ 24 ॥
hk transliteration by Sanscript