Vishnupurana 6.1.49

6.1.49

kalau jagatpatiṃ viṣṇuṃ sarvasraṣṭāram īśvaram
nārcayiṣyanti maitreya pāṣaṇḍopahatā narāḥ //

In the Kali age, Maitreya, men, corrupted by unbelievers, will refrain from adoring Vishńu, the lord of sacrifice, the creator and lord of all; and will say, "Of what authority are the Vedas? what are gods or Brahmans? what need is there of purification with water?" Then will the clouds yield scanty rain: then will the corn be light in ear, and the grain will be poor, and of little sap: garments will be mostly made of the fibres of the San: the principal of trees will be the Sami: the prevailing caste will be the Śúdra: millet will be the more common grain: the milk in use will be chiefly that of goats: unguents will be made of Usíra grass. The mother and father-in-law will be venerated in place of parents; and a man's friends will be his brother-in-law, or one who has a wanton wife. Men will say, "Who has a father? who has a mother? each one is born according to his deeds:" and therefore they will look upon a wife's or husband's parents as their own. Endowed with little sense, men, subject to all the infirmities of mind, speech, and body, will daily commit sins; and every thing that is calculated to afflict beings, vicious, impure, and wretched, will be generated in the Kali age. Then shall some places follow a separate duty, devoid of holy study, oblations to fire, and invocations of the gods. Then, in the Kali age, shall a man acquire by a trifling exertion as much eminence in virtue as is the result of arduous penance in the Krita age, or age of purity.