Dīgha Nikāya

DN 2 From… Sāmaññaphalasutta: The Fruits of the Ascetic Life “And how, great king, is a mendicant accomplished in ethics?”

Majjhima Nikāya

MN 41 From… Sāleyyakasutta: The Brahmins of Sālā “…And how, householders, are there four kinds of verbal conduct not in accordance with the Dhamma, unrighteous conduct?”
MN 58 Abhayarājakumārasutta: With Prince Abhaya ‘Sir, might the Realized One utter speech that is disliked by others?’
MN 61 From… Ambalaṭṭhikā Rāhulovāda Sutta: The Exhortation to Rāhula at Mango Stone “…Whenever you want to do a verbal action, you should reflect on it:”
MN 139 From… Araṇavibhaṅgasutta: The Analysis of Non-Conflict ‘…Don’t talk behind people’s backs, and don’t speak sharply in their presence.’ That’s what I said, but why did I say it?’

SN 1.78 Kāmasutta: Desire “…Speech should be let out when it’s good, but not when it’s bad.”
SN 3.7 Aḍḍakaraṇasutta: Judgment “But they tell deliberate lies for the sake of sensual pleasures.”
SN 6.9 Turūbrahmasutta: With the Brahmā Tudu “Didn’t the Buddha declare you a non-returner? So what exactly are you doing back here? See how far you have strayed!”
SN 7.2 Akkosa Sutta: Insult “And if they don’t accept them, to whom do those foods belong?”
SN 17.37 Mātusutta: Mother “But some time later I see them tell a deliberate lie because their mind is overcome and overwhelmed by possessions, honor, and popularity.”
SN 42.13 From… Pāṭaliyasutta: With Pāṭaliya ‘Mister, that man amused the king with lies.’
SN 45.8 From… Vibhaṅgasutta: Analysis “And what is right speech?”
SN 56.10 Tiracchānakathāsutta: Unworthy Talk “Mendicants, don’t engage in all kinds of unworthy talk”

AN 3.28 Gūthabhāṇīsutta: Speech Like Dung “And what, bhikkhus, is the person whose speech is like dung?”
AN 4.73 Sappurisa Sutta: A Person of Integrity “There is the case where a person of no integrity, when unasked, reveals another person’s bad points, to say nothing of when asked.”
AN 4.82 Musāvādasutta: Lying “Mendicants, someone with four qualities is cast down to hell. What four? They use speech that’s false, divisive, harsh, or nonsensical.”
AN 4.83 Avaṇṇārahasutta: Where Criticism Takes You “Without examining or scrutinizing, they praise those deserving of criticism,”
AN 4.132 Paṭibhānasutta: Eloquence “One who speaks on topic and fluently.”
AN 5.211 Akkosakasutta: An Abuser “Mendicants, a mendicant who abuses and insults their spiritual companions, speaking ill of the noble ones, can expect these five drawbacks.”
AN 5.214 Bahubhāṇisutta: Someone Who Talks a Lot “Mendicants, there are these five drawbacks for a person who talks a lot.”
AN 9.23 Taṇhāmūlakasutta: Rooted in Craving “I will teach you about nine things rooted in craving.”
AN 10.44 Kusinārasutta: At Kusināra “Mendicants, a mendicant who wants to accuse another should first check five things in themselves and establish five things in themselves.”

Khp 5 From… Maṅgala Sutta — Protection “Well-spoken words: This is the highest protection.”

Dhp 133–134 From… Daṇḍavagga: The Rod “Don’t speak harshly, they may speak harshly back.”
Dhp 223–224 From… Kodhavagga: Anger “Defeat anger with kindness”

Ud 2.2 Rājasutta: Kings “Mendicants, it is not appropriate for you gentlemen who have gone forth in faith from the lay life to homelessness to talk about such things.”

Iti 25 Musāvādasutta: Lying “Bhikkhus, I say that for an individual who transgresses in one thing, there is no evil deed whatsoever he would not do.”

Snp 3.3 Subhāsitasutta: Well-Spoken Words “Mendicants, speech that has four factors is well spoken, not poorly spoken.”

Pv 1.3 Pūtimukha Sutta: Stinky Mouth “But your mouth is being eaten by worms and is very smelly.”
Pv 3.9 Kūṭavinicchayika Sutta: The Back Biter “But you eat the flesh off your own back. What evil deed have you committed by body speech or mind to make you eat your own flesh?”

Thag 21.1 From… Vaṅgīsattheragāthā: Vaṅgīsa “Speak only such words that do not hurt yourself nor harm others; such speech is truly well spoken.”