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 ||
ビーシュマは言った。「汚れなく、粗くなく、残酷でなく、誹謗に染まらぬ言葉を語るべきである。しかもそのような言葉でさえ、量を少なくし、心を散らさず安定させて語れ—とりわけ、ダルマの微妙さを見抜き、真に益あることを語ろうとする者は。」
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.