[112] Then the Venerable Puṇṇa approached the Blessed One … Sitting to one side, the Venerable Puṇṇa said this to the Blessed One: "It would be good, venerable sir, if the Blessed One would teach me the Dhamma in brief, so that, having heard the Dhamma from the Blessed One, I might dwell alone, withdrawn, heedful, ardent (ātāpī), and resolute."
"There are, Puṇṇa, forms cognizable by the eye that are wished for, desirable, agreeable, pleasing, connected with sensuality, provocative of lust. If a bhikkhu delights in them, welcomes them, and remains holding to them, then, as he delights in them, welcomes them, and remains holding to them, delight (nandi) arises. With the origin of delight, Puṇṇa, there is the origin of suffering (dukkha), I say. … There are, Puṇṇa, tastes cognizable by the tongue … There are, Puṇṇa, mental phenomena (dhammā) cognizable by the mind that are wished for, desirable, agreeable, pleasing, connected with sensuality, provocative of lust. If a bhikkhu delights in them, welcomes them, and remains holding to them, then, as he delights in them, welcomes them, and remains holding to them, delight arises. With the origin of delight, Puṇṇa, there is the origin of suffering, I say."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.