One verse

Srimad Bhagavatam 12.2.23

12.2.23

यदावतीर्णो भगवान् कल्किर्धर्मपतिर्हरि: । कृतं भविष्यति तदा प्रजासूतिश्च सात्त्विकी ॥ २३ ॥

yadāvatīrṇo bhagavān kalkir dharma-patir hariḥ kṛtaṁ bhaviṣyati tadā prajā-sūtiś ca sāttvikī

yadā
when
avatīrṇaḥ
incarnates
bhagavān
the Supreme Lord
kalkiḥ
Kalki
dharma-patiḥ
the master of religion
hariḥ
the Supreme Personality of Godhead
kṛtam
Satya-yuga
bhaviṣyati
will begin
tadā
then
prajā-sūtiḥ
the creation of progeny
ca
and
sāttvikī
in the mode of goodness

When the Supreme Lord has appeared on earth as Kalki, the maintainer of religion, Satya-yuga will begin, and human society will bring forth progeny in the mode of goodness.