My dear King, a devotee who has taken shelter of the dust from the lotus feet of the Lord can transcend the influence of the six material waves — namely hunger, thirst, lamentation, illusion, old age and death — and he can conquer the mind and five senses. However, this is not very wonderful for a pure devotee of the Lord because even a person beyond the jurisdiction of the four castes — in other words, an untouchable — is immediately relieved of bondage to material existence if he utters the holy name of the Lord even once.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
स एवमपरिमितबलपराक्रम एकदा तु देवर्षिचरणा- नुशयनानुपतितगुणविसर्गसंसर्गेणानिर्वृतमिवात्मानं मन्यमान आत्मनिर्वेद इदमाह
sa evamaparimitabalaparākrama ekadā tu devarṣicaraṇā- nuśayanānupatitaguṇavisargasaṃsargeṇānirvṛtamivātmānaṃ manyamāna ātmanirveda idamāha
SB 5.1.35