One verse

Srimad Bhagavatam 1.18.5

1.18.5

तावत्कलिर्न प्रभवेत् प्रविष्टोऽपीह सर्वत: । यावदीशो महानुर्व्यामाभिमन्यव एकराट् ॥ ५ ॥

tavat kalir na prabhavet pravisto ’piha sarvatah yavad iso mahan urvyam abhimanyava eka-rat

tavat
so long
kalih
the personality of Kali
na
cannot
prabhavet
flourish
pravistah
entered in
api
even though
iha
here
sarvatah
everywhere
yavat
as long as
isah
the lord
mahan
great
urvyam
powerful
abhimanyavah
the son of Abhimanyu
eka-rat
the one emperor.

As long as the great, powerful son of Abhimanyu remains the Emperor of the world, there is no chance that the personality of Kali will flourish.