Srimad Bhagavatam
Canto 2 Chapter 1 Text 11

etan nirvidyamananam
icchatam akuto-bhayam
yoginam nrpa nirnitam
harer namanukirtanam

TRANSLATION
O King, constant chanting of the holy name of the Lord after the ways of the great authorities is the doubtless and fearless way of success for all, including those who are free from all material desires, those who are desirous of all material enjoyment, and also those who are self-satisfied by dint of transcendental knowledge.