महाभारतः mahābhārataḥ - book-3, chapter-78, verse-16

वैशंपायन उवाच ।
ततो हृष्टमना राजा बृहदश्वमुवाच ह ।
भगवन्नक्षहृदयं ज्ञातुमिच्छामि तत्त्वतः ॥१६॥

16. vaiśaṁpāyana uvāca ,
tato hṛṣṭamanā rājā bṛhadaśvamuvāca ha ,
bhagavannakṣahṛdayaṁ jñātumicchāmi tattvataḥ.

16. vaiśaṃpāyanaḥ uvāca tataḥ hṛṣṭamanā rājā bṛhadaśvam
uvāca ha bhagavan akṣahṛdayam jñātum icchāmi tattvataḥ

16. Vaiśampāyana said: Then the king, with a joyful heart, spoke to Bṛhadaśva: 'O revered one (bhagavan), I wish to truly understand the secret knowledge of dice (akṣahṛdaya).'

Words meanings summery:

• वैशंपायनः (vaiśaṁpāyanaḥ) - Vaiśampāyana (Vaiśampāyana (proper name))

• उवाच (uvāca) - said (said, spoke)

• ततः (tataḥ) - then (then, thereupon, from that)

• हृष्टमना (hṛṣṭamanā) - with a joyful heart (joyful-minded, glad at heart)

• राजा (rājā) - the king (king, ruler)

• बृहदश्वम् (bṛhadaśvam) - to Bṛhadaśva (to Bṛhadaśva (proper name))

• उवाच (uvāca) - spoke (said, spoke)

• ह (ha) - (emphatic particle, often untranslated in English) (indeed, certainly (particle))

• भगवन् (bhagavan) - O revered one (bhagavan) (O worshipful one, O blessed one)

• अक्षहृदयम् (akṣahṛdayam) - the secret knowledge of dice (akṣahṛdaya) (the secret of dice, the essence of dice-play)

• ज्ञातुम् (jñātum) - to understand (to know, to learn)

• इच्छामि (icchāmi) - I wish (I wish, I desire)

• तत्त्वतः (tattvataḥ) - in truth, truly (in truth, truly, really, essentially)

Words meanings and morphology

वैशंपायनः (vaiśaṁpāyanaḥ) - Vaiśampāyana (Vaiśampāyana (proper name))

(proper noun)

Nominative, masculine, singular of vaiśaṃpāyana

vaiśaṁpāyana - name of a sage, narrator of the Mahābhārata

Note: Subject of 'uvāca'.

उवाच (uvāca) - said (said, spoke)

(verb)

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

perfect tense

Perfect tense (liṭ), 3rd person singular, active voice. Root 'vac'.

Root: vac (class 2)

Note: Perfect tense of root 'vac'.

ततः (tataḥ) - then (then, thereupon, from that)

(indeclinable)

Note: Adverb of time.

हृष्टमना (hṛṣṭamanā) - with a joyful heart (joyful-minded, glad at heart)

(adjective)

Nominative, masculine, singular of hṛṣṭamanas

hṛṣṭamanas - joyful-minded, glad at heart, cheerful

Compound of 'hṛṣṭa' (pleased) + 'manas' (mind).

Compound type : bahuvrihi (hṛṣṭa+manas)

• hṛṣṭa – pleased, delighted, thrilled, glad
  adjective (masculine)
  Past Passive Participle
  Past Passive Participle of root 'hṛṣ' (to be excited, to rejoice).
  Root: hṛṣ (class 1)
• manas – mind, intellect, heart, disposition
  noun (neuter)
  Root: man (class 4)

Note: Qualifies 'rājā'.

राजा (rājā) - the king (king, ruler)

(noun)

Nominative, masculine, singular of rājan

rājan - king, ruler, sovereign

Root: rāj (class 1)

Note: Subject of 'uvāca'.

बृहदश्वम् (bṛhadaśvam) - to Bṛhadaśva (to Bṛhadaśva (proper name))

(proper noun)

Accusative, masculine, singular of bṛhadaśva

bṛhadaśva - name of a sage

Compound of 'bṛhat' (great) + 'aśva' (horse) - 'possessing great horses' or simply a proper name.

Compound type : bahuvrihi (bṛhat+aśva)

• bṛhat – great, large, vast
  adjective (neuter)
• aśva – horse
  noun (masculine)

Note: Object of 'uvāca'.

उवाच (uvāca) - spoke (said, spoke)

(verb)

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

perfect tense

Perfect tense (liṭ), 3rd person singular, active voice. Root 'vac'.

Root: vac (class 2)

Note: Perfect tense of root 'vac'.

ह (ha) - (emphatic particle, often untranslated in English) (indeed, certainly (particle))

(indeclinable)

भगवन् (bhagavan) - O revered one (bhagavan) (O worshipful one, O blessed one)

(adjective)

Vocative, masculine, singular of bhagavat

bhagavat - blessed, glorious, divine, worshipful, venerable, revered

Possessive adjective from 'bhaga' (fortune, excellence).

Note: Addressing the sage Bṛhadaśva.

अक्षहृदयम् (akṣahṛdayam) - the secret knowledge of dice (akṣahṛdaya) (the secret of dice, the essence of dice-play)

(noun)

Accusative, neuter, singular of akṣahṛdaya

akṣahṛdaya - the secret of dice, the knowledge of dicing

Compound of 'akṣa' (dice) + 'hṛdaya' (heart, essence, secret).

Compound type : tatpurusha (akṣa+hṛdaya)

• akṣa – die (for gambling), cube, axis
  noun (masculine)
• hṛdaya – heart, mind, essence, secret
  noun (neuter)

Note: Object of 'jñātum'.

ज्ञातुम् (jñātum) - to understand (to know, to learn)

(indeclinable)

infinitive

Infinitive of root 'jñā' (to know).

Root: jñā (class 9)

Note: Infinitive, governs 'akṣahṛdayam'.

इच्छामि (icchāmi) - I wish (I wish, I desire)

(verb)

1st person , singular, active, present (laṭ) of iṣ

present tense

Present tense, 1st person singular, active voice. Root 'iṣ' (class 6).

Root: iṣ (class 6)

तत्त्वतः (tattvataḥ) - in truth, truly (in truth, truly, really, essentially)

(indeclinable)

Adverb formed from 'tattva' (truth, reality) with suffix -tas.

Note: Modifies 'jñātum'.