Daśa-Karmapatha: Restraints of Body, Speech, and Mind (दश कर्मपथ)
असप्प्रलापं पारुष्यं पैशुन्यमनृतं तथा । चत्वारि वाचा राजेन्द्र न जल्पेन्नानुचिन्तयेत्
Idle prattle, harsh speech, slander, and falsehood—these four are sins of the tongue. O king, one should neither utter them nor even entertain them in thought.
भीष्म उवाच