SB 6.11.10
sa indra-satruh kupito bhrsam taya
mahendra-vaham gadayoru-vikramah
jaghana kumbha-sthala unnadan mrdhe
tat karma sarve samapujayan nrpa
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O King Pariksit, the powerful Vrtrasura, the enemy of King Indra, angrily struck the head of Indra’s elephant with that club, making a tumultuous sound on the battlefield. For this heroic deed, the soldiers on both sides glorified him.