SB 10.66.22
tatha kasi-pateh kayac
chira utkrtya patribhih
nyapatayat kasi-puryam
padma-kosam ivanilah
Translation:
With His arrows, Lord Krsna similarly severed Kasiraja’s head from his body, sending it flying into Kasi city like a lotus flower thrown by the wind.
Purport:
Srila Visvanatha Cakravarti explains why Krsna threw Kasiraja’s head into the city: “As he went off to battle, the King of Kasi had promised the citizens: ‘My dear residents of Kasi, today I will bring the enemy’s head into the midst of the city. Have no doubt of this.’ The King’s sinful queens had also boasted to their maids-in-waiting: ‘Today our master will certainly bring the head of the Lord of Dvaraka.’ Therefore the Supreme Lord threw the King’s head into the city to astonish the inhabitants.”