Bhagavad Gita 18.38

विषयेन्द्रियसंयोगाद्यत्तदग्रेऽमृतोपमम् |
परिणामे विधेविव तत्सुखं राजसं स्मृतम्

Translation

Happiness is said to be in the mode of passion when it is derived from the contact of the senses with their objects. Such happiness is like nectar at first but poison at the end.