tasmat sankirtanam visnor
mahatam api kauravya
tasmat—therefore; sankirtanam—the congregational chanting of the holy name; visnoh—of Lord Visnu; jagat-mangalam—the most auspicious performance within this material world; amhasam—for sinful activities; mahatam api—even though very great; kauravya—O descendant of the Kuru family; viddhi—understand; aikantika—the ultimate; niskrtam—atonement.
Sukadeva Gosvami continued: My dear King, the chanting of the holy name of the Lord is able to uproot even the reactions of the greatest sins. Therefore the chanting of the sankirtana movement is the most auspicious activity in the entire universe. Please try to understand this so that others will take it seriously.
We should note that although Ajamila chanted the name of Narayana imperfectly, he was delivered from all sinful reactions. The chanting of the holy name is so auspicious that it can free everyone from the reactions of sinful activities. One should not conclude that one may continue to sin with the intention of chanting Hare Krsna to neutralize the reactions. Rather, one should be very careful to be free from all sins and never think of counteracting sinful activities by chanting the Hare Krsna mantra, for this is another offense. If by chance a devotee accidentally performs some sinful activity, the Lord will excuse him, but one should not intentionally perform sinful acts.
Link to this page: https://prabhupadabooks.com/sb/6/3/31