Injury by mean words can’t be healed

रोहते सायकैर्विद्धं वनं परशुना हतम् ।
वाचा दुरुक्तं भीभत्सं न सम्रोहति वाक्क्षतम् ।।  – महाभारत, उद्योगपर्व
Rohate sayakairviddham vanam parashuna hatam
Vacha drruktam bheebhatsam na samrohati vakkshatam – Mahabharat, Udyog Parv
Meaning : The (injury) caused by an arrow might heal; a forest felled with an axe may sprout. (But) the (wound) caused by a spiteful, mean word shall barely ever recover.