Srimad-Bhagavatam: Canto 1 - Chapter 1 - Verse 40

Sanskrit:

अमूनि पञ्च स्थानानि ह्यधर्मप्रभव: कलि: ।औत्तरेयेण दत्तानि न्यवसत् तन्निदेशकृत् ॥ ४० ॥

ITRANS:

amūni pañca sthānānihy adharma-prabhavaḥ kaliḥauttareyeṇa dattāninyavasat tan-nideśa-kṛt

Translation:

Thus the personality of Kali, by the directions of Mahārāja Parīkṣit, the son of Uttarā, was allowed to live in those five places.

Purport:

Thus the Age of Kali began with gold standardization, and therefore falsity, intoxication, animal slaughter and prostitution are rampant all over the world, and the saner section is eager to drive out corruption. The counteracting process is suggested above, and everyone can take advantage of this suggestion.