Majjhima Nikaya (Coleção dos Discursos Médios) 5:13
SUJATOAppassādā kāmā vuttā bhagavatā bahudukkhā bahupāyāsā, ādīnavo ettha bhiyyo.
The Buddha says that sensual pleasures give little gratification and much suffering and distress, and they are all the more full of drawbacks.