ನಭಶ್ಚ ಪೃಥಿವೀಂ ಚೈವ ತುಮುಲೋ ವ್ಯನುನಾದಯನ್ ॥೧೯॥
sa ghoṣo dhārtarāṣṭrāṇāṃ hṛdayāni vyadārayat |
nabhaśca pṛthivīṃ caiva tumulo vyanunādayan ||19||
Gist of the sloka:
These sounds shook the battlefield and reached the skies vibrating everything in between. These sounds shook the heart of sons of Emperor Dhitrarastra.
Given that Emperor Dhitrarastra had originally spoken to Sanjaya as “my sons” and Pandavas, Sanjaya tries to give it back to him in similar fashion.
Explaining the disciplined way, Pandavas indicated their readiness and the earthshaking vibrations it created, Sanjaya addresses the fear it created in the Kauravas as “Dhitrarastra sons”.
Pandavas due their disciplined behavior had already won the mental battle by instilling fear in the hearts of Kauravas.