“…Whenever you want to do a verbal action, you should reflect on it: ‘This verbal action I want to do—would it lead to self-affliction, to the affliction of others, or to both? Would it be an unskillful verbal action, with painful consequences, painful results?’ If, on reflection, you know that it would lead to self-affliction, to the affliction of others, or to both; it would be an unskillful verbal action with painful consequences, painful results, then any verbal action of that sort is absolutely unfit for you to do. But if on reflection you know that it would not cause affliction… it would be a skillful verbal action with pleasant consequences, pleasant results, then any verbal action of that sort is fit for you to do.
“While you are doing a verbal action, you should reflect on it: ‘This verbal action I am doing—is it leading to self-affliction, to the affliction of others, or to both? Is it an unskillful verbal action, with painful consequences, painful results?’ If, on reflection, you know that it is leading to self-affliction, to affliction of others, or both… you should give it up. But if on reflection you know that it is not… you may continue with it.
“Having done a verbal action, you should reflect on it: ‘This verbal action I have done—did it lead to self-affliction, to the affliction of others, or to both? Was it an unskillful verbal action, with painful consequences, painful results?’ If, on reflection, you know that it led to self-affliction, to the affliction of others, or to both; it was an unskillful verbal action with painful consequences, painful results, then you should confess it, reveal it, lay it open to the Teacher or to an observant companion in the holy life. Having confessed it… you should exercise restraint in the future. But if on reflection you know that it did not lead to affliction… it was a skillful verbal action with pleasant consequences, pleasant results, then you should stay mentally refreshed & joyful, training day & night in skillful qualities.…
Read the entire translation of Majjhima Nikāya 61 Ambalaṭṭhikā Rāhulovāda Sutta. The Exhortation to Rāhula at Mango Stone by Bhikkhu Ṭhanissaro on DhammaTalks.org. Or read a different translation on SuttaCentral.net. Or listen on PaliAudio.com or Voice.SuttaCentral.net. Or explore the Pali on DigitalPaliReader.online.