Bhagwad Gita
Chapter 1, Verse 19
स घोषो धार्तराष्ट्राणां हृदयानि व्यदारयत्।
नभश्च पृथिवीं चैव तुमुलो व्यनुनादयन्।।1.19।।
The blowing of these different conchshells became uproarious, and thus, vibrating both in the sky and on the earth, it shattered the hearts of the sons of Dhrtarastra.