Bhagavad Gita Chapter 18 Verse 38
भगवद् गीता अध्याय 18 श्लोक 38

विषयेन्द्रियसंयोगाद्यत्तदग्रेऽमृतोपमम्।
परिणामे विषमिव तत्सुखं राजसं स्मृतम्।।18.38।।



हिंदी अनुवाद - स्वामी तेजोमयानंद
।।18.38।। जो सुख विषयों और इन्द्रियों के संयोग से उत्पन्न होता है? वह प्रथम तो अमृत के समान? परन्तु परिणाम में विष तुल्य होता है? वह सुख राजस कहा गया है।।


Kumara Vaishnava Sampradaya - Commentary
The sukham or happiness of those who enjoy the objects  of  the  senses  and
take great pleasure in sense gratification Lord Krishna states  which  seems
like  nectar  in  the  beginning  but  which  in  the  end  after  incessant
repetition and habitual engagement seems to be just like a potion of  poison
when detected too late that such activities are a  guaranteed  premium  paid
reservation for samsara the perpetual cycle of birth and death  is  situated
in raja guna the mode of passion.