The tenth descent, Kalki, is unlike all the others, for it has not yet come. Where the previous nine look back into sacred history, Kalki looks forward into prophecy: he is the avatāra yet to be, the one whose appearing will close our present age and open the next.

The tradition holds that we live in the Kali Yuga, the last and most fallen of the four world-ages — a time when dharma, imagined as a bull, stands on a single leg; when truth withers, greed and conflict spread, and rulers become rapacious. Each cosmic cycle (yuga) declines from a golden beginning to a dark end, and the Kali Yuga is that ending. But endings, in Hindu cosmology, are also beginnings. At the appointed close, when injustice has reached its limit, Vishnu will descend a final time.

He is envisioned as Kalki, most often as a warrior mounted on a swift white horse (sometimes the horse itself is divine), wielding a blazing sword "drawn like a comet." In the classic descriptions he is born in a village called Śambhala to a brahmin family, and rides out to destroy the wicked, restore the righteous, and re-establish the rule of truth. With his coming the Kali Yuga ends and the Satya Yuga, the Age of Truth, begins again — the wheel of the ages turning back to its golden start.

It is important to read this rightly. Kalki is not a story of mere destruction but of renewal: the harsh cleansing is in service of a fresh dawn. The imagery is martial, yet the meaning is regenerative — the burning away of what has grown corrupt so that goodness can flower anew.

Because Kalki lies in the future, traditions differ on the details and the timing, and across the centuries hopeful or troubled communities have at times read their own moment as the eve of his coming. Responsible tradition treats such datings with caution: the texts speak in vast cosmic spans, not calendars, and the wiser teachers have always turned the prophecy inward. The point is not to await a rescuer idly but to recognise that the Age of Truth is also built, here and now, by every act of honesty and compassion.

So the Daśāvatāra ends not with a memory but with a promise: that however dark the age, the divine will not abandon the world — and that the night, however long, gives way to morning.