Kamasutra
तत्र पृष्ठमुरः कर्माणि लभते ॥ ४० ॥
40 What is generally done between the thighs is in this case done from behind.
english translation
धेनुक आसन में वक्ष पर सम्पन्न किये जाने वाले कार्य पीठ पर सम्पन्न किये जाते है ॥ ४० ॥
hindi translation
tatra pRSThamuraH karmANi labhate ॥ 40 ॥
hk transliteration by Sanscript