Śrīmad-Bhāgavatam · Text 6.2.16
Who is speaking and story frame
Speaking:The Viṣṇudūtassince 6.2.8inside 3 frames: Sūta Gosvāmī → the sages at NaimiṣāraṇyaŚukadeva Gosvāmī → King ParīkṣitThe Viṣṇudūtas → the Yamadūtas
गुरूणां च लघूनां च गुरूणि च लघूनि च ।
प्रायश्चित्तानि पापानां ज्ञात्वोक्तानि महर्षिभि: ॥ १६ ॥
gurūṇāṁ ca laghūnāṁ ca
gurūṇi ca laghūni ca
prāyaścittāni pāpānāṁ
jñātvoktāni maharṣibhiḥ
Translation
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 Kṛṣṇa mantra, however, vanquishes all the effects of sinful activities, regardless of whether heavy or light.
Read Śrīla Prabhupāda's purport on Vedabase.io