Srimad Bhagavatam, Book 12, chapter 2, texts 17-22
The incarnation of Visnu, the supreme lord
and preceptor of all beings, is meant for the
protection of the dharma of the virtuous, and to
redeem them from the bondage of karma.
He will incarnate as Kalki in the house of the
renowned Visnuyasa, chieftain of the village
of Sambala.
Seated on a fast horse named Devadatta, Kalki,
the lord of all, endowed with eight yogic powers
and peerless spledour, will course over the earth
at high velocity, destroying the countless plunderers
parading as kings.
When all the evil doers are slain, the people of towns
and villages will have contact with the fragrance
spreading from the unguents on the body of Vasudeva,
which will render the minds of all of them pure.
When Vasudeva, the embodiment of strength and
purity, is lodged in their hearts, they will procreate
issue that are mentally and physically strong.
From this time of the incarnation of the worshipful lord,
the lord of dharma, the Krta (satya) yuga begins,
and a race of men with sattva predominating
will be generated.