Shiva Purana
तस्मात्संभोगयोग्यत्वं तस्यास्त्वय्येव शोभते ॥ नारीरत्नं यतः सा वै पुंरत्नं च भवान्प्रभो ॥ ३१॥
Hence the fitness for sexual indulgence with her rests only in you since she is a gem among ladies and O lord, you are a gem among men.
english translation
tasmAtsaMbhogayogyatvaM tasyAstvayyeva zobhate ॥ nArIratnaM yataH sA vai puMratnaM ca bhavAnprabho ॥ 31॥
hk transliteration by Sanscript