Mbh 3.187.2b

O bull of the Bharata race, towards the end of the last mentioned period of one thousand years, i.e., when the period wanted to complete a cycle is short, men generally become addicted to falsehood in speech. O son of Pritha, then sacrifices and gifts and vows, instead of being performed by principals are suffered to be performed by representatives! Brahmanas then perform acts that are reserved for the Sudras, and the Sudras betake themselves to the acquisition of wealth. Then Kshatriyas also betake themselves to the practice of religious acts. In the Kali age, the Brahmanas also abstain from sacrifices and the study of the Vedas, are divested of their staff and deer-skin, and in respect of food become omnivorous. And, O son, the Brahmanas in that age also abstain from prayers and meditation while the Sudras betake themselves to these! The course of the world looketh contrary, and indeed, these are the signs that foreshadow the Universal Destruction. And, O lord of men, numerous Mleccha kings then rule over the earth! And those sinful monarchs, addicted to false speech, govern their subjects on principles that are false. The Andhhas, the Sakas, the Pulindas, the Yavanas, the Kamvojas, the Valhikas and the Abhiras, then become, O best of men, possessed of bravery and the sovereignty of the earth. This, O tiger among men, becometh the state of the world during the eve, O Bharata, of the Kali age! Not a single Brahmana then adhereth to the duties of his order. And the Kshatriyas and the Vaisyas also, O monarch, follow practices contrary to those that are proper for their own orders. And men become short-lived, weak in strength, energy, and prowess; and endued with small might and diminutive bodies, they become scarcely truthful in speech. And the human population dwindles away over large tracts of country, and the regions of the earth, North and South, and East and West, become crowded with animals and beasts of prey.