Manava Dharmashastra 2.161

2.161

ayamaparaḥ puruṣārthamātradharmaḥ | arūṃṣi marmāṇi tudati vyathayatītyarantudo marmasparśinīrvāco'tyantodvejanakarīrākrośavāco yo vadati | ārttaḥ pīḍito'pi pareṇa na tādṛśamapriyaṃ bhāṣeta | tathā paradrohaḥ parāpakāraḥ tadarthaṃ karma taddhīśca na karttavyā | athavā paradrohaścāsau karma ca tatra dhīḥ buddhirapi na karttavyā | yayā vācā narmaprayuktayā'pi para udvijate atha ca tāṃ vācaṃ nodīrayet | vākyaikadeśamapi tādṛśaṃ noccārayedyata ekadeśādarthaprakaraṇādinā'rthāntarasūcanaṃ pratīyate | yataḥ sā vāk alokyā svargādilokaprāptipratibandhinī |

Even though pained, one should not (use such words as) cut to the quick; he should not do, or think of, injury to others; he should not utter words by which others are pained, and which (therefore) will obstruct his passage to (higher) regions.—(161)

Medhātithi’s commentary (manubhāṣya):
This is another duty laid down for man in relation to ordinary life.

‘Aruntadaḥ (?)’ means that which cuts—‘tudati’—the ritats (?)—‘arūṃṣi’; i.e., affecting the vitals;—he who utters such words—i.e., such words of chiding as are extremely painful,—is called ‘aruntudaḥ.’

‘Pained’;—even though pain may have been indicted on him by the other person, he should not utter unpleasant words.

Similarly ‘injury to others’ is ‘harming others’; and one should not do an act conducive to it; nor should he think of it.

Or, ‘paradrohakarmadhīḥ’ may he taken to mean ‘think of doing injury to others.’

Such words by which—even though uttered in joke—other persons are pained—one should not utter.

Even a part of the sentence uttered by one should not he so disagreeable; for even portions of sentences may become indicative of unpleasant notions, through the force of their meaning, the particular context (occasion) and so forth.

One should not utter such words as they are ‘alokyā,’—i.e., obstructing his passage to the heavenly regions.