Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 34
Sanskrit:
तत: समेखले वीरौ संयुक्तावितरेतरम् ।जघ्नतुर्वज्रकल्पाभ्यां गदाभ्यां रणदुर्मदौ ॥ ३४ ॥
ITRANS:
tataḥ samekhale vīrausaṁyuktāv itaretaramjaghnatur vajra-kalpābhyāṁgadābhyāṁ raṇa-durmadau
Translation:
The two heroes thus began battling each other on the level fighting grounds outside the city. Maddened with the fury of combat, they struck each other with their lightning-bolt-like clubs.