महाभारतः mahābhārataḥ - book-12, chapter-331, verse-19

वैशंपायन उवाच ।
नमो भगवते तस्मै व्यासायामिततेजसे ।
यस्य प्रसादाद्वक्ष्यामि नारायणकथामिमाम् ॥१९॥

19. vaiśaṁpāyana uvāca ,
namo bhagavate tasmai vyāsāyāmitatejase ,
yasya prasādādvakṣyāmi nārāyaṇakathāmimām.

19. vaiśaṃpāyanaḥ uvāca namaḥ bhagavate tasmai vyāsāya
amitatejase yasya prasādāt vakṣyāmi nārāyaṇakathām imām

19. vaiśaṃpāyanaḥ uvāca tasmai bhagavate amitatejase vyāsāya
namaḥ yasya prasādāt imām nārāyaṇakathām vakṣyāmi

19. Vaiśampāyana said: Salutations to that revered Vyāsa of immeasurable splendor, by whose grace I shall narrate this story of Narayana.

Words meanings summery:

• वैशंपायनः (vaiśaṁpāyanaḥ) - The sage Vaiśampāyana, a pupil of Vyāsa and narrator of the Mahābhārata. (Vaiśampāyana)

• उवाच (uvāca) - he said

• नमः (namaḥ) - salutation, obeisance

• भगवते (bhagavate) - To the revered sage Vyāsa. (to the revered one, to the Lord)

• तस्मै (tasmai) - to that (one)

• व्यासाय (vyāsāya) - To the sage Vyāsa, author of the Mahābhārata and other Hindu scriptures. (to Vyāsa)

• अमिततेजसे (amitatejase) - To Vyāsa, who possesses boundless spiritual energy and radiance. (to the one with immeasurable splendor/energy)

• यस्य (yasya) - By whose grace (referring to Vyāsa). (whose, by whose)

• प्रसादात् (prasādāt) - Due to the favor or blessing of Vyāsa. (from the grace, by the grace)

• वक्ष्यामि (vakṣyāmi) - I shall narrate/speak

• नारायणकथाम् (nārāyaṇakathām) - the story of Narayana

• इमाम् (imām) - This particular story of Narayana. (this)

Words meanings and morphology

वैशंपायनः (vaiśaṁpāyanaḥ) - The sage Vaiśampāyana, a pupil of Vyāsa and narrator of the Mahābhārata. (Vaiśampāyana)

(proper noun)

Nominative, masculine, singular of vaiśaṃpāyana

vaiśaṁpāyana - Vaiśampāyana (name of a sage, pupil of Vyāsa)

उवाच (uvāca) - he said

(verb)

3rd person , singular, active, past perfect (liṭ) of vac

Root: vac (class 2)

नमः (namaḥ) - salutation, obeisance

(noun)

Nominative, neuter, singular of namas

namas - bow, obeisance, homage, salutation

भगवते (bhagavate) - To the revered sage Vyāsa. (to the revered one, to the Lord)

(adjective)

Dative, masculine, singular of bhagavat

bhagavat - revered, glorious, divine, fortunate, Lord

तस्मै (tasmai) - to that (one)

(pronoun)

Dative, masculine, singular of tad

tad - that, he, she, it

व्यासाय (vyāsāya) - To the sage Vyāsa, author of the Mahābhārata and other Hindu scriptures. (to Vyāsa)

(proper noun)

Dative, masculine, singular of vyāsa

vyāsa - Vyāsa (name of a celebrated sage and author)

अमिततेजसे (amitatejase) - To Vyāsa, who possesses boundless spiritual energy and radiance. (to the one with immeasurable splendor/energy)

(adjective)

Dative, masculine, singular of amitatejas

amitatejas - of immeasurable splendor/energy/power

Compound type : bahuvrīhi (amita+tejas)

• amita – immeasurable, unmeasured, infinite
  adjective (neuter)
  Past Passive Participle
  Derived from root mā (to measure) with negative prefix a- and verbal prefix vi- (though often treated as a simple adjective). Or directly a-mita.
  Root: mā (class 2)
• tejas – splendor, brilliance, energy, power
  noun (neuter)

यस्य (yasya) - By whose grace (referring to Vyāsa). (whose, by whose)

(pronoun)

Genitive, masculine, singular of yad

yad - who, which, what, that

प्रसादात् (prasādāt) - Due to the favor or blessing of Vyāsa. (from the grace, by the grace)

(noun)

Ablative, masculine, singular of prasāda

prasāda - grace, favor, blessing, clarity, serenity

वक्ष्यामि (vakṣyāmi) - I shall narrate/speak

(verb)

1st person , singular, active, future (lṛṭ) of vac

Root: vac (class 2)

नारायणकथाम् (nārāyaṇakathām) - the story of Narayana

(noun)

Accusative, feminine, singular of nārāyaṇakathā

nārāyaṇakathā - story of Narayana

Compound type : tatpuruṣa (nārāyaṇa+kathā)

• nārāyaṇa – Narayana (a name of Viṣṇu, a sage)
  proper noun (masculine)
• kathā – story, tale, narrative
  noun (feminine)

इमाम् (imām) - This particular story of Narayana. (this)

(pronoun)

Accusative, feminine, singular of idam

idam - this, this here