Kamasutra
रागवदाहार्यरागं कृत्रिमरागं व्यवहितरागं पोटारतं खलरतमयन्त्रितरतमिति रतविशेषाः ॥ १४ ॥
Ragavat, passionate love, born of physical attraction; Aharyaraga, love born from habit, the result of affection produced by long cohabitation; Kritrimaraga, feigned love, without true feeling; Vyavahitaraga, substitute love, through an interposed party. The man sleeps with his wife, while thinking of another woman; Potarata, neutral sex, without feeling, practiced with servant-women or female porters; Khalarata, degrading love, to satiate one's basest instincts, practiced with a corrupt woman or some gross individual.
english translation
रतविशेष प्रकरण रागवत् (स्वाभाविक राग), आहार्य राग, कृत्रिम राग, व्यवहित राग, पोटारत, खलरत और अनियन्त्रित ये रतविशेष हैं ॥ १४ ॥
hindi translation
rAgavadAhAryarAgaM kRtrimarAgaM vyavahitarAgaM poTArataM khalaratamayantritaratamiti ratavizeSAH ॥ 14 ॥
hk transliteration by Sanscript