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tasya te capa-nirmukta
bhittva varmani raksasam
kayan avivisus tigma
girin asanayo yatha
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The sharp arrows released from the bow of Dhruva Maharaja pierced the shields and bodies of the enemy, like the thunderbolts released by the King of heaven, which dismantle the bodies of the mountains.