SB 6.2.16
gurunam ca laghunam ca
guruni ca laghuni ca
prayascittani papanam
jñatvoktani maharsibhih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Authorities who are learned scholars and sages have carefully ascertained that one should atone for the heaviest sins by undergoing a heavy process of atonement and one should atone for lighter sins by undergoing lighter atonement. Chanting the Hare Krsna mantra, however, vanquishes all the effects of sinful activities, regardless of whether heavy or light.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
In this regard, Srila Visvanatha Cakravarti Thakura describes an incident that took place when Samba was rescued from the punishment of the Kauravas. Samba fell in love with the daughter of Duryodhana, and since according to ksatriya custom one is not offered a ksatriya’s daughter unless he displays his chivalrous valor, Samba abducted her. Consequently Samba was arrested by the Kauravas. Later, when Lord Balarama came to rescue him, there was an argument about Samba’s release. Since the argument was not settled, Balarama showed His power in such a way that all of Hastinapura trembled and would have been vanquished as if by a great earthquake. Then the matter was settled, and Samba married Duryodhana’s daughter. The purport is that one should take shelter of Krsna-Balarama, the Supreme Personality of Godhead, whose protective power is so great that it cannot be equaled in the material world. However powerful the reactions of one’s sins, they will immediately be vanquished if one chants the name of Hari, Krsna, Balarama or Narayana.