Natyashastra
निश्चये परितोषे च वितर्के चिन्तने तथा । विलासलीलाविब्वोकशृंगारात्मनिरूपणे ॥ १७१॥
In determination, satisfaction, deliberation, and reflection, as well as in expressing playfulness, sportiveness, and the Erotic Sentiment, this posture is to be used.
english translation
nizcaye paritoSe ca vitarke cintane tathA । vilAsalIlAvibvokazaRMgArAtmanirUpaNe ॥ 171॥
hk transliteration by Sanscript