One verse

Srimad Bhagavatam 12.4.38

12.4.38

नित्यो नैमित्तिकश्चैव तथा प्राकृतिको लय: । आत्यन्तिकश्च कथित: कालस्य गतिरीद‍ृशी ॥ ३८ ॥

nityo naimittikaś caiva tathā prākṛtiko layaḥ ātyantikaś ca kathitaḥ kālasya gatir īdṛśī

nityaḥ
continuous
naimittikaḥ
occasional
ca
and
eva
indeed
tathā
also
prākṛtikaḥ
natural
layaḥ
annihilation
ātyantikaḥ
final
ca
and
kathitaḥ
are described
kālasya
of time
gatiḥ
the progress
īdṛśī
like this

In this way the progress of time is described in terms of the four kinds of annihilation — continuous, occasional, elemental and final.