One verse

Srimad Bhagavatam 2.10.43

2.10.43

तत: कालाग्निरुद्रात्मा यत्सृष्टमिदमात्मन: । संनियच्छति तत् काले घनानीकमिवानिल: ॥ ४३ ॥

tatah kalagni-rudratma yat srstam idam atmanah sanniyacchati tat kale ghananikam ivanilah

tatah
thereafter, at the end
kala
destruction
agni
fire
rudra-atma
in the form of Rudra
yat
whatever
srstam
created
idam
all these
atmanah
of His own
sam
completely
niyacchati
annihilates
tat kale
at the end of the millennium
ghana-anikam
bunches of clouds
iva
like that of
anilah
air.

Thereafter, at the end of the millennium, the Lord Himself in the form of Rudra, the destroyer, will annihilate the complete creation as the wind displaces the clouds.