Matsyapurana 47.251

47.251

pañcaviṃśe sthitaḥ kalkiś caritārthaḥ sasainikaḥ
śūdrān saṃśodhayitvā tu samudrāntaṃ ca vai svayam //

At the close of Kaliyuga (the present iron age), there will be the Kalki mainfestation, in the house of Viṣṇuyasa, and the sage, Pârâśarya Vyâsa will be the officiating priest. This will be the tenth incarnation, and Yâjñyavalkya will make his appearance before this coming mainfestation.—248. This incarnation will destroy all the wicked ones and the hypocrites; and, with a large army of the Brâhmaṇas, He will kill Śudra Kings and drive away all hypocrisy. After killing the enemies of Brâhmaṇas and other enemies, He will march on with His army in the 28th of the Kaliyuga, and then, after purifying the Śudras, will cross the ocean, where He will destroy the sinful mixed castes and, thus fulfilling His mission, He will educate his peoples.—249-253.