Śrīla Rūpa Gosvāmī quotes another verse from the Third Canto of Śrīmad-Bhāgavatam, 33rd Chapter, 6th verse, in which Devahūti addresses her son, Kapiladeva and says, "My dear Lord, there are nine different kinds of devotional service, beginning from hearing and chanting. Anyone who hears about Your pastimes, who chants about Your glories, who offers You obeisances, who thinks of You and, in this way, executes any of the nine kinds of devotional service-even if he is born in a family of dog-eaters [the lowest grade of mankind]-becomes immediately qualified to perform sacrifices." As such, for anyone who is actually engaged in devotional service in full Kṛṣṇa consciousness, how is it possible that he has not become purified? It is not possible. One who is engaged in Kṛṣṇa consciousness and devotional service has without doubt become freed from all contaminations of material sinful activities. Devotional service therefore has the power to actually nullify all kinds of reactions to sinful deeds. A devotee is nevertheless always alert not to commit any sinful activities; this is his specific qualification as a devotee. Thus the Śrīmad-Bhāgavatam states that by performing devotional service a person who was born even in a family of dog-eaters may become eligible to take part in the performance of the ritualistic ceremonies recommended in the Vedas. It is implicit in this statement that a person born into a family of dog-eaters is generally not fit for performing yajña, or sacrifice. The priestly caste in charge of performing these ritualistic ceremonies recommended in the Vedas is called the brāhmaṇa order. Unless one is a brāhmaṇa, he cannot perform these ceremonies.

Chapter 1: Characteristics of Pure Devotional Service