Charak Samhita
परुषस्यातिमात्रस्य सूचकस्यानृतस्य च। वाक्यस्याकालयुक्तस्य धारयेद्वेगमुत्थितम् ॥२८॥
॥ Vachika vega (Verbal urges)॥ Harsh talks, excessive talking, that which intends to harm others or backbiting, lying and untimely speech (improper words at improper time) are to be restrained during speaking.
english translation
paruSasyAtimAtrasya sUcakasyAnRtasya ca। vAkyasyAkAlayuktasya dhArayedvegamutthitam ॥28॥
hk transliteration by Sanscript