Mahabharata 13.17.158

जन्तोर्विशुद्धपापस्य भवे भक्तिः प्रजायतेउत्पन्ना च भवे भक्तिरनन्या सर्वभावतः

jantorviśuddhapāpasya bhave bhaktiḥ prajāyateutpannā ca bhave bhaktirananyā sarvabhāvataḥ

Our plain-language meaning of this verse is waiting for scholar review.