If there is some [material] desire in his heart, then the devotee should continue his chanting, humbly recognising it, yet detesting it. In a short time the Lord will come into the heart, purify it of all desire, and accept the devotee's love.
Sri Krsna, the Personality of Godhead, who is the Paramatma [Supersoul] in everyone's heart and the benefactor of the truthful devotee, cleanses desire for material enjoyment from the heart of the devotee who has developed the urge to hear His messages, which are in themselves virtuous when properly heard and chanted.
Srila Bhaktivinoda Thakura, Sri Caitanya Siksamrita