Prahlāda–Indra Saṃvāda: Kartṛtva (Agency) and Svabhāva (Nature) in the Causation of Karma
कल्कापेतामपरुषामनृशंसामपैशुनाम् । ईदृगल्पं च वक्तव्यमविक्षिप्तेन चेतसा
kalkāpetām aparuṣām anṛśaṃsām apaiśunām | īdṛg-alpaṃ ca vaktavyam avikṣiptena cetasā ||
Bhīṣma dit : «Qu’on prononce des paroles sans souillure, ni dures, ni cruelles, ni entachées de médisance. Même une telle parole doit être dite avec mesure, et avec un esprit stable, sans distraction—surtout chez celui qui perçoit la subtilité du dharma et veut dire ce qui est réellement bénéfique».
भीष्म उवाच
Speech should be ethically purified: truthful yet non-harmful, gentle, compassionate, and free from slander; moreover, even good speech should be measured and spoken with a steady, undistracted mind.
In Śānti Parva, Bhīṣma instructs on dharma and proper conduct; here he gives a rule of disciplined speech as part of ethical living and self-mastery.