Kamasutra
पुरुषेण च चोद्यमाना विवदेत् । कृच्छ्रेण चाभ्युपगच्छेत् ॥ ११ ॥
At the same time, if the man indicates his desire for this act, he first refuses, then, having protested, devotes himself to it.
english translation
यदि नायक पहले ही नपुंसक से मुखमैथुन के लिए कहे, तो नपुंसक को उससे विवाद करना चाहिये और बहुत कठिनाई से मुखमैथुन कराये ॥ ११ ॥
hindi translation
puruSeNa ca codyamAnA vivadet । kRcchreNa cAbhyupagacchet ॥ 11 ॥
hk transliteration by Sanscript