Sstrhsrtj

If possible please provide quotations.

Here are the possible fruits one gains from reciting the names of Lord Vishnu. These verses are from the Vishnu Sahasranama (One thousand names of Vishnu):

He who hears or sings, It all without fail, In all days of the year,
Will never get in to bad, In this life and after.

The Brahmin will get knowledge, The kshatriya will get victory, The
vaisya will get wealth, The shudra will get pleasures, By reading
these.

He who seeks Dharma, He who seeks wealth, He who seeks pleasures, He
who seeks children, Will all without fail, Get what they want.

He who sings the thousand names of Vasudeva, With utmost devotion,
After he rises in the morn, With a mind tied in Him always, Will get
fame without fail, Will be first in what he does, Will get riches that
last, Would attain salvation from these bonds, Will never be afraid of
anything, Will be bubbling with vim and valour, Will not get any ills,
Will be handsome forever, Will have all the virtues in this wide
world, And he who is ill will get cured, He who is bound will be free,
He who is afraid, will get rid of fear, He who is in danger, will be
safe.

He who chants these holy thousand names, With devotion to
Purushottama, Will cross the miseries, That cannot be crossed Without
fail.

The man who nears Vasudeva, The man who takes Him as shelter, Would
get rid of all sins, And become purer than the pure, And will reach
Brahmam, Which existed forever.

The devotees of Vasudeva the great, Never fall into days that are
difficult, And never forever suffer, Of birth, death, old age and
fear.

He who sings these names with devotion, And with Bhakthi, Will get
pleasure the great, Patience to allure, Wealth to attract, Bravery and
memory to excel.

The devotee of the Lord Purushottama, Has neither anger nor fear, Nor
avarice and nor bad thoughts.

He who desires fame and pleasure, Should chant these verses, sung by
Vyasa, Of this great stotra of Vishnu without fail.

He will never fail, Who sings the praise of the Lord, Of this
universe, Who does not have birth, Who is always stable, And who
shines and sparkles, And has lotus eyes. Om Nama He will not fail.

Here are some quotes from Bhagavatam.

SB 12.3.51: My dear King, although Kali-yuga is an ocean of faults,
there is still one good quality about this age: Simply by chanting the
names of Kṛṣṇa, one can become free from material bondage and be
promoted to the transcendental kingdom.

SB 11.5.36: Those who are actually advanced in knowledge are able to
appreciate the essential value of this Age of Kali. Such enlightened
persons worship Kali-yuga because in this fallen age all perfection of
life can easily be achieved by the performance of saṅkīrtana.

SB 11.5.37: Indeed, there is no higher possible gain for embodied
souls forced to wander throughout the material world than the Supreme
Lord’s saṅkīrtana movement, by which one can attain the supreme peace
and free oneself from the cycle of repeated birth and death.

SB 2.1.11: O King, constant chanting of the holy name of the Lord
after the ways of the great authorities is the doubtless and fearless
way of success for all, including those who are free from all material
desires, those who are desirous of all material enjoyment, and also
those who are self-satisfied by dint of transcendental knowledge.

SB 8.23.16: There may be discrepancies in pronouncing the mantras and
observing the regulative principles, and, moreover, there may be
discrepancies in regard to time, place, person and paraphernalia. But
when Your Lordship’s holy name is chanted, everything becomes
faultless.

SB 1.1.14: Living beings who are entangled in the complicated meshes
of birth and death can be freed immediately by even unconsciously
chanting the holy name of Kṛṣṇa, which is feared by fear personified.

SB 12.12.47: If when falling, slipping, feeling pain or sneezing one
involuntarily cries out in a loud voice, “Obeisances to Lord Hari!”
one will be automatically freed from all his sinful reactions.

SB 12.3.44: Terrified, about to die, a man collapses on his bed.
Although his voice is faltering and he is hardly conscious of what he
is saying, if he utters the holy name of the Supreme Lord he can be
freed from the reaction of his fruitive work and achieve the supreme
destination. But still people in the Age of Kali will not worship the
Supreme Lord.

SB 11.2.40: By chanting the holy name of the Supreme Lord, one comes
to the stage of love of Godhead. Then the devotee is fixed in his vow
as an eternal servant of the Lord, and he gradually becomes very much
attached to a particular name and form of the Supreme Personality of
Godhead. As his heart melts with ecstatic love, he laughs very loudly
or cries or shouts. Sometimes he sings and dances like a madman, for
he is indifferent to public opinion.

SB 12.13.23: I offer my respectful obeisances unto the Supreme Lord,
Hari, the congregational chanting of whose holy names destroys all
sinful reactions, and the offering of obeisances unto whom relieves
all material suffering.

You can also refer this section of Bhagavatam, it has many such verses.
SB 6.2: Ajāmila Delivered by the Viṣṇudūtas