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Śrīmad-Bhāgavatam
[Canto 6, Ch. 16]
na hi bhagavann aghaṭitam idam 
  tvad-darśanān nṛṇām akhila-pāpa-kṣayaḥ 
  yan-nāma sakṛc chravaṇāt 
  pukkaśo 'pi vimucyate saṁsārāt
na—not; hi—indeed; bhagavan—O my Lord; aghaṭitam—not occurred; idam—this; tvat—of You; darśanāt—by seeing; nṛṇām—of all human beings; akhila—all; pāpa—of sins; kṣayaḥ—annihilation; yan-nāma—whose name; sakṛt—only once; śravaṇāt—by hearing; pukkaśaḥ—the lowest class, the caṇḍāla; api—also; vimucyate—is delivered; saṁsārāt—from the entanglement of material existence.
TRANSLATION
My Lord, it is not impossible for one to be immediately freed from all material contamination by seeing You. Not to speak of seeing You personally, merely by hearing the holy name of Your Lordship only once, even caṇḍālas, men of the lowest class, are freed from all material contamination. Under the circumstances, who will not be freed from material contamination simply by seeing You?
PURPORT
As stated in the Śrīmad-Bhāgavatam (9.5.16),  yan-nāma-śruti-mātreṇa pumān bhavati nirmalaḥ : simply by hearing the holy name of the Lord, one is immediately purified. Therefore, in this age of Kali, when all people are very contaminated, the chanting of the holy name of the Lord is recommended as the only means of improvement.
harer nāma harer nāma 
  harer nāmaiva kevalam 
  kalau nāsty eva nāsty eva 
  nāsty eva gatir anyathā
“In this age of quarrel and hypocrisy the only means of deliverance is the chanting of the holy name of the Lord. There is no other way. There is no other way. There is no other way.” ( Bṛhan-nāradīya Purāṇa ) Śrī