krsna-varnam tvisakrsnam
sangopangastra-parsadam
yajnaih sankirtana-prayair
yajanti hi sumedhasah
"'In the age of Kali the Lord incarnates as a devotee, yellowish in color, and is always chanting Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare. Although He is Krsna, His complexion is not blackish like Krsna's in Dvapara-yuga but is golden. It is in Kali-yuga that the Lord engages in preaching love of Godhead through the sankirtana movement, and those living entities who are intelligent adopt this process of self-realization.'
It is also stated in Srimad-Bhagavatam (12.3.52):
krte yad dhyayato visnum
tretayam yajato makhaih
dvapare paricaryayam
kalau taddhari-kirtanat
'The self-realization which was achieved in the Satya millenium by meditation, in the Treta millenium by the performance of different sacrifices, and in the Dvapara millenium by worship of Lord Krsna, can be achieved in the age of Kali simply by chanting the holy names, Hare Krsna.' This is also confirmed in Visnu Purana (6.2.17) where it is stated:
dhyayan krte yajan yajnais
tretayam dvapare 'rcayan
yad apnoti tad apnoti
kalau sankirtya kesavam
'In this age there is no use in meditation, sacrifice and temple worship. Simply by chanting the holy name of Krsna -- Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare -- one can achieve perfect self-realization.'"
(Teachings of Lord Caitanya, Chapter 8)
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