Bhagavatapurana 4.22.20

4.22.20

asty eva rājan bhavato madhudviṣaḥ pādāravindasya guṇānuvādane /
ratir durāpā vidhunoti naiṣṭhikī kāmaṃ kaṣāyaṃ malam antar-ātmanaḥ //

20. Certainly thou hast, O King, that rare enthusiasm necessary to make others discourse upon the excellent attributes of the lotus-like feet of Vishnu, the enemy of Madhu—(that firm enthusiasm) which washes off the tenacious dirt of desire abiding in the heart.