Sri Sri Krishna Premi Swamigal - Vaishnava Samhita
Haridasa Charitam. Vol II Book 4 Chp 6 Shlokas 3 - 4
Sarva Siddhim Avaapnoti Keertayan Keshavam Kalau
Kalim Sabhaajayanti Eva Saadhavo Guna Darshinah
Kaliratyanta Dushtopi Krishna Keertana Tatparaan
Na Peedayati Govinda Bhaktaanamalacheshtitaan
In this Yuga one can easily gain all the coveted accomplishmnets singing in the praise of Shri Krishna. Hence wise men and the sadhus who look to the brighter side of everything acclaim the Kaliyuga.
Though Kali is very sinful it never troubles those pious bhagavatas, who engage in chanting the Names of glories of Shri Krishna.
Hare Rama Hare Rama Rama Rama Hare Hare
Hare Krishna Hare Krishna Krishna Krishna Hare Hare