Shiva Purana
रजस्वलासु कन्यासु विधवासु च मैथुनम् । मांसचर्मरसादीनां लवणस्य च विक्रयः ५९ ।
Engaging in sexual activity with menstruating women, virgins, and widows; selling or consuming meat, skins, and salt—these actions are considered sinful.
english translation
rajasvalAsu kanyAsu vidhavAsu ca maithunam । mAMsacarmarasAdInAM lavaNasya ca vikrayaH 59 ।
hk transliteration by Sanscript