One who chants the holy name of the Lord is immediately freed from the reactions of unlimited sins, even if he chants indirectly [to indicate something else], jokingly, for musical entertainment, or even neglectfully. This is accepted by all the learned scholars of the scriptures.
Srimad Bhagavatam 6.2.14,
Get yourself drowned in ocean of Chanting of Mahamantra, instead of money & wealth.
Chanting Hare Krishna increases the ocean of transcendental bliss.
The Quest for Enlightment, Chapter 1,
One can attain salvation simply by chanting the holy name of the Lord.
Srimad Bhagavatam 1.18.7
To chant God’s holy name means to associate directly with Him.
In order to be recognized by Krishna, the Supreme Personality of Godhead, one should chant the holy name of the Lord continuously, twenty-four hours a day.
Srimad Bhagavatam 4.23.7