Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 5
Sanskrit:
शङ्खनादेन यन्त्राणि हृदयानि मनस्विनाम् ।प्राकारं गदया गुर्व्या निर्बिभेद गदाधर: ॥ ५ ॥
ITRANS:
śaṅkha-nādena yantrāṇihṛdayāni manasvināmprākāraṁ gadayā gurvyānirbibheda gadādharaḥ
Translation:
With the sound of His conchshell Lord Gadādhara then shattered the magic seals of the fortress, along with the hearts of its brave defenders, and with His heavy club He demolished the surrounding earthen ramparts.