SB 10.59.6
pañcajanya-dhvanim srutva
yugantasani-bhisanam
murah sayana uttasthau
daityah pañca-sira jalat
Translation:
The five-headed demon Mura, who slept at the bottom of the city’s moat, awoke and rose up out of the water when he heard the vibration of Lord Krsna’s Pañcajanya conchshell, a sound as terrifying as the thunder at the end of the cosmic age.