[1663] "Bhikkhus, do not engage in the various kinds of pointless talk (tiracchānakathā), that is to say: talk of kings, talk of thieves, talk of great ministers, talk of armies, talk of dangers, talk of battles, talk of food, talk of drink, talk of clothing, talk of beds, talk of garlands, talk of scents, talk of relatives, talk of vehicles, talk of villages, talk of towns, talk of cities, talk of countries, talk of women, talk of men, talk of liquor, talk of streets, talk of wells, talk of those departed, miscellaneous talk, speculation about the world, speculation about the sea, talk of becoming this or that — and so on. For what reason? Because, bhikkhus, such talk is unbeneficial, does not belong to the fundamentals of the holy life, and does not lead to disenchantment, to dispassion, to cessation (nirodha), to peace, to direct knowledge, to enlightenment, to Nibbāna.
"But when you speak, bhikkhus, you should speak thus: 'This is suffering (dukkha)'; you should speak thus: 'This is the origin of suffering'; you should speak thus: 'This is the cessation of suffering'; you should speak thus: 'This is the way of practice leading to the cessation of suffering.' For what reason? Because, bhikkhus, such talk is beneficial, belongs to the fundamentals of the holy life, and leads to disenchantment, to dispassion, to cessation, to peace, to direct knowledge, to enlightenment, to Nibbāna.
"Therefore, bhikkhus, effort should be made [to understand]: 'This is suffering' … effort should be made [to understand]: 'This is the way of practice leading to the cessation of suffering.'"
The Samādhi Chapter, the first.
Its summary (uddāna):
Concentration (samādhi), seclusion, two others on clansmen,
ascetics-and-brahmins, thought, reflection, and disputatious talk.
The Dhammacakkappavattana Chapter, the second.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.